Vulnerabilities > CVE-2018-1100 - Classic Buffer Overflow vulnerability in multiple products

047910
CVSS 7.8 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
local
low complexity
zsh
canonical
redhat
CWE-120
nessus

Summary

zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath function. A local attacker could exploit this to execute arbitrary code in the context of another user.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2018-2_0-0050_ZSH.NASL
    descriptionAn update of the zsh package has been released.
    last seen2020-03-17
    modified2019-02-07
    plugin id121951
    published2019-02-07
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/121951
    titlePhoton OS 2.0: Zsh PHSA-2018-2.0-0050
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    
    # The descriptive text and package checks in this plugin were
    # extracted from VMware Security Advisory PHSA-2018-2.0-0050. The text
    # itself is copyright (C) VMware, Inc.
    
    
    include('compat.inc');
    
    if (description)
    {
      script_id(121951);
      script_version("1.2");
      script_set_attribute(attribute:"plugin_modification_date", value:"2019/02/07");
    
      script_cve_id("CVE-2018-1100");
    
      script_name(english:"Photon OS 2.0: Zsh PHSA-2018-2.0-0050");
      script_summary(english:"Checks the rpm output for the updated packages.");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote PhotonOS host is missing multiple security updates.");
      script_set_attribute(attribute:"description", value:
    "An update of the zsh package has been released.");
      script_set_attribute(attribute:"see_also", value:"https://github.com/vmware/photon/wiki/Security-Updates-2-50.md");
      script_set_attribute(attribute:"solution", value:
    "Update the affected Linux packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-6913");
    
      script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2018/05/29");
      script_set_attribute(attribute:"patch_publication_date", value:"2018/05/29");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/02/07");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:zsh");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:2.0");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"PhotonOS Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/PhotonOS/release", "Host/PhotonOS/rpm-list");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    
    release = get_kb_item("Host/PhotonOS/release");
    if (isnull(release) || release !~ "^VMware Photon") audit(AUDIT_OS_NOT, "PhotonOS");
    if (release !~ "^VMware Photon (?:Linux|OS) 2\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 2.0");
    
    if (!get_kb_item("Host/PhotonOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "PhotonOS", cpu);
    
    flag = 0;
    
    if (rpm_check(release:"PhotonOS-2.0", reference:"zsh-5.3.1-8.ph2")) flag++;
    if (rpm_check(release:"PhotonOS-2.0", reference:"zsh-debuginfo-5.3.1-8.ph2")) flag++;
    if (rpm_check(release:"PhotonOS-2.0", reference:"zsh-html-5.3.1-8.ph2")) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "zsh");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-A5E9A619F6.NASL
    descriptionupdate to latest upstream release, which fixes the following vulnerabilities : - CVE-2018-1100 - stack-based buffer overflow in utils.c:checkmailpath() - CVE-2018-1083 - stack-based buffer overflow in compctl.c:gen_matches_files() - CVE-2018-1071 - stack-based buffer overflow in exec.c:hashcmd() Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2019-01-03
    plugin id120679
    published2019-01-03
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/120679
    titleFedora 28 : zsh (2018-a5e9a619f6)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2018-AC1D9C2777.NASL
    description - fix stack-based buffer overflow in utils.c:checkmailpath() (CVE-2018-1100) - fix stack-based buffer overflow in gen_matches_files() (CVE-2018-1083) - fix stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2018-05-07
    plugin id109591
    published2018-05-07
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109591
    titleFedora 27 : zsh (2018-ac1d9c2777)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2018-1094.NASL
    descriptionThis update for zsh to version 5.6.2 fixes the following issues : These security issues were fixed : - CVE-2018-0502: The beginning of a #! script file was mishandled, potentially leading to an execve call to a program named on the second line (bsc#1107296) - CVE-2018-13259: Shebang lines exceeding 64 characters were truncated, potentially leading to an execve call to a program name that is a substring of the intended one (bsc#1107294) - CVE-2018-1100: Prevent stack-based buffer overflow in the utils.c:checkmailpath function that allowed local attackers to execute arbitrary code in the context of another user (bsc#1089030). - CVE-2018-1071: Prevent stack-based buffer overflow in the exec.c:hashcmd() function that allowed local attackers to cause a denial of service (bsc#1084656). - CVE-2018-1083: Prevent buffer overflow in the shell autocomplete functionality that allowed local unprivileged users to create a specially crafted directory path which lead to code execution in the context of the user who tries to use autocomplete to traverse the mentioned path (bsc#1087026). - Disallow evaluation of the initial values of integer variables imported from the environment These non-security issues were fixed : - Fixed that the signal SIGWINCH was being ignored when zsh is not in the foreground. - Fixed two regressions with pipelines getting backgrounded and emitting the signal SIGTTOU - The effect of the NO_INTERACTIVE_COMMENTS option extends into $(...) and `...` command substitutions when used on the command line. - The
    last seen2020-06-05
    modified2018-10-03
    plugin id117898
    published2018-10-03
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117898
    titleopenSUSE Security Update : zsh (openSUSE-2018-1094)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20180619_ZSH_ON_SL6_X.NASL
    descriptionSecurity Fix(es) : - zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) - zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) - zsh: buffer overrun in symlinks (CVE-2017-18206) - zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100)
    last seen2020-03-18
    modified2018-07-03
    plugin id110893
    published2018-07-03
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110893
    titleScientific Linux Security Update : zsh on SL6.x i386/x86_64 (20180619)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2018-1932.NASL
    descriptionAn update for zsh is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es) : * zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) * zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) * zsh: buffer overrun in symlinks (CVE-2017-18206) * zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. The CVE-2018-1083 and CVE-2018-1100 issues were discovered by Richard Maciel Costa (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.10 Release Notes and Red Hat Enterprise Linux 6.10 Technical Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id110652
    published2018-06-22
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110652
    titleCentOS 6 : zsh (CESA-2018:1932)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201805-10.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201805-10 (Zsh: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Zsh. Please review the CVE identifiers referenced below for details. Impact : A local attacker could execute arbitrary code, escalate privileges, or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id110174
    published2018-05-29
    reporterThis script is Copyright (C) 2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/110174
    titleGLSA-201805-10 : Zsh: Multiple vulnerabilities
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2018-1107.NASL
    descriptionA buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do a symbolic link resolution in the aforementioned path. If the user affected is privileged, this leads to privilege escalation.(CVE-2017-18206) A buffer overflow flaw was found in the zsh shell auto-complete functionality. A local, unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use auto-complete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.(CVE-2018-1083) A NULL pointer dereference flaw was found in the code responsible for saving hashtables of the zsh package. An attacker could use this flaw to cause a denial of service by crashing the user shell.(CVE-2018-7549) A NULL pointer dereference flaw was found in the code responsible for the cd builtin command of the zsh package. An attacker could use this flaw to cause a denial of service by crashing the user shell.(CVE-2017-18205) A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do symbolic link resolution in the aforementioned path. An attacker could exploit this vulnerability to cause a denial of service condition on the target.(CVE-2014-10072) A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom
    last seen2020-06-10
    modified2018-12-07
    plugin id119466
    published2018-12-07
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/119466
    titleAmazon Linux AMI : zsh (ALAS-2018-1107)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2018-1932.NASL
    descriptionAn update for zsh is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es) : * zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) * zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) * zsh: buffer overrun in symlinks (CVE-2017-18206) * zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. The CVE-2018-1083 and CVE-2018-1100 issues were discovered by Richard Maciel Costa (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.10 Release Notes and Red Hat Enterprise Linux 6.10 Technical Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id110607
    published2018-06-19
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110607
    titleRHEL 6 : zsh (RHSA-2018:1932)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20181030_ZSH_ON_SL7_X.NASL
    descriptionSecurity Fix(es) : - zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) - zsh: buffer overflow for very long fds in >&amp; fd syntax (CVE-2014-10071) - zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) - zsh: NULL dereference in cd in sh compatibility mode under given circumstances (CVE-2017-18205) - zsh: buffer overrun in symlinks (CVE-2017-18206) - zsh: Stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071) - zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) - zsh: crash on copying empty hash table (CVE-2018-7549)
    last seen2020-03-18
    modified2018-11-27
    plugin id119204
    published2018-11-27
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/119204
    titleScientific Linux Security Update : zsh on SL7.x x86_64 (20181030)
  • NASL familyNewStart CGSL Local Security Checks
    NASL idNEWSTART_CGSL_NS-SA-2019-0144_ZSH.NASL
    descriptionThe remote NewStart CGSL host, running version MAIN 4.05, has zsh packages installed that are affected by multiple vulnerabilities: - A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom you have new mail message, leads to code execution in the context of the user who receives the message. If the user affected is privileged, this leads to privilege escalation. (CVE-2018-1100) - A buffer overflow flaw was found in the zsh shell auto- complete functionality. A local, unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use auto-complete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation. (CVE-2018-1083) - A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do a symbolic link resolution in the aforementioned path. If the user affected is privileged, this leads to privilege escalation. (CVE-2017-18206) - A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do symbolic link resolution in the aforementioned path. An attacker could exploit this vulnerability to cause a denial of service condition on the target. (CVE-2014-10072) Note that Nessus has not tested for this issue but has instead relied only on the application
    last seen2020-06-01
    modified2020-06-02
    plugin id127411
    published2019-08-12
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127411
    titleNewStart CGSL MAIN 4.05 : zsh Multiple Vulnerabilities (NS-SA-2019-0144)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-2235.NASL
    descriptionAccording to the versions of the zsh package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service.(CVE-2018-1071) - zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the utils.c:checkmailpath function. A local attacker could exploit this to execute arbitrary code in the context of another user.(CVE-2018-1100) - An issue was discovered in zsh before 5.6. The beginning of a #! script file was mishandled, potentially leading to an execve call to a program named on the second line.(CVE-2018-0502) - An issue was discovered in zsh before 5.6. Shebang lines exceeding 64 characters were truncated, potentially leading to an execve call to a program name that is a substring of the intended one.(CVE-2018-13259) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-08
    modified2019-11-08
    plugin id130697
    published2019-11-08
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/130697
    titleEulerOS 2.0 SP5 : zsh (EulerOS-SA-2019-2235)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2018-699.NASL
    descriptionThis update for zsh to version 5.5 fixes the following issues : Security issues fixed : - CVE-2018-1100: Fixes a buffer overflow in utils.c:checkmailpath() that can lead to local arbitrary code execution (bsc#1089030) - CVE-2018-1071: Fixed a stack-based buffer overflow in exec.c:hashcmd() (bsc#1084656) - CVE-2018-1083: Fixed a stack-based buffer overflow in gen_matches_files() at compctl.c (bsc#1087026) Non-security issues fixed : - The effect of the NO_INTERACTIVE_COMMENTS option extends into $(...) and `...` command substitutions when used on the command line. - The
    last seen2020-06-05
    modified2018-07-09
    plugin id110957
    published2018-07-09
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110957
    titleopenSUSE Security Update : zsh (openSUSE-2018-699)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-1037-1.NASL
    descriptionThis update for zsh fixes the following issues : - CVE-2018-1100: Fixed a buffer overflow in utils.c:checkmailpath() that could lead to local arbitrary code execution ( bsc#1089030) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id109278
    published2018-04-23
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109278
    titleSUSE SLES11 Security Update : zsh (SUSE-SU-2018:1037-1)
  • NASL familyAmazon Linux Local Security Checks
    NASL idAL2_ALAS-2018-1013.NASL
    description1553531 : Stack-based buffer overflow in exec.c:hashcmd() zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service.(CVE-2018-1071) Stack-based buffer overflow in gen_matches_files() at compctl.c A buffer overflow flaw was found in the zsh shell auto-complete functionality. A local, unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use auto-complete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation.(CVE-2018-1083) Buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom
    last seen2020-06-01
    modified2020-06-02
    plugin id109692
    published2018-05-11
    reporterThis script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/109692
    titleAmazon Linux 2 : zsh (ALAS-2018-1013)
  • NASL familyNewStart CGSL Local Security Checks
    NASL idNEWSTART_CGSL_NS-SA-2019-0070_ZSH.NASL
    descriptionThe remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has zsh packages installed that are affected by multiple vulnerabilities: - A buffer overflow flaw was found in the zsh shell file descriptor redirection functionality. An attacker could use this flaw to cause a denial of service by crashing the user shell. (CVE-2014-10071) - A NULL pointer dereference flaw was found in the code responsible for the cd builtin command of the zsh package. An attacker could use this flaw to cause a denial of service by crashing the user shell. (CVE-2017-18205) - A buffer overflow flaw was found in the zsh shell check path functionality. A local, unprivileged user can create a specially crafted message file, which, if used to set a custom you have new mail message, leads to code execution in the context of the user who receives the message. If the user affected is privileged, this leads to privilege escalation. (CVE-2018-1100) - A buffer overflow flaw was found in the zsh shell auto- complete functionality. A local, unprivileged user can create a specially crafted directory path which leads to code execution in the context of the user who tries to use auto-complete to traverse the before mentioned path. If the user affected is privileged, this leads to privilege escalation. (CVE-2018-1083) - zsh through version 5.4.2 is vulnerable to a stack-based buffer overflow in the exec.c:hashcmd() function. A local attacker could exploit this to cause a denial of service. (CVE-2018-1071) - A NULL pointer dereference flaw was found in the code responsible for saving hashtables of the zsh package. An attacker could use this flaw to cause a denial of service by crashing the user shell. (CVE-2018-7549) - A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do a symbolic link resolution in the aforementioned path. If the user affected is privileged, this leads to privilege escalation. (CVE-2017-18206) - A buffer overflow flaw was found in the zsh shell symbolic link resolver. A local, unprivileged user can create a specially crafted directory path which leads to a buffer overflow in the context of the user trying to do symbolic link resolution in the aforementioned path. An attacker could exploit this vulnerability to cause a denial of service condition on the target. (CVE-2014-10072) Note that Nessus has not tested for this issue but has instead relied only on the application
    last seen2020-06-01
    modified2020-06-02
    plugin id127273
    published2019-08-12
    reporterThis script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/127273
    titleNewStart CGSL CORE 5.04 / MAIN 5.04 : zsh Multiple Vulnerabilities (NS-SA-2019-0070)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2018-3073.NASL
    descriptionAn update for zsh is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es) : * zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) * zsh: buffer overflow for very long fds in >& fd syntax (CVE-2014-10071) * zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) * zsh: NULL dereference in cd in sh compatibility mode under given circumstances (CVE-2017-18205) * zsh: buffer overrun in symlinks (CVE-2017-18206) * zsh: Stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071) * zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) * zsh: crash on copying empty hash table (CVE-2018-7549) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. The CVE-2018-1083, CVE-2018-1071, and CVE-2018-1100 issues were discovered by Richard Maciel Costa (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id118989
    published2018-11-16
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118989
    titleCentOS 7 : zsh (CESA-2018:3073)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2018-1424.NASL
    descriptionAccording to the versions of the zsh package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) - zsh: Stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071) - zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-06
    modified2018-12-28
    plugin id119913
    published2018-12-28
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/119913
    titleEulerOS 2.0 SP2 : zsh (EulerOS-SA-2018-1424)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2019-501.NASL
    descriptionThis update for zsh to version 5.5 fixes the following issues : Security issues fixed : - CVE-2018-1100: Fixes a buffer overflow in utils.c:checkmailpath() that can lead to local arbitrary code execution (bsc#1089030) - CVE-2018-1071: Fixed a stack-based buffer overflow in exec.c:hashcmd() (bsc#1084656) - CVE-2018-1083: Fixed a stack-based buffer overflow in gen_matches_files() at compctl.c (bsc#1087026) Non-security issues fixed : - The effect of the NO_INTERACTIVE_COMMENTS option extends into $(...) and `...` command substitutions when used on the command line. - The
    last seen2020-06-01
    modified2020-06-02
    plugin id123207
    published2019-03-27
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/123207
    titleopenSUSE Security Update : zsh (openSUSE-2019-501)
  • NASL familySlackware Local Security Checks
    NASL idSLACKWARE_SSA_2019-013-01.NASL
    descriptionNew zsh packages are available for Slackware 14.0, 14.1, and 14.2 to fix security issues.
    last seen2020-03-17
    modified2019-01-14
    plugin id121145
    published2019-01-14
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/121145
    titleSlackware 14.0 / 14.1 / 14.2 : zsh (SSA:2019-013-01)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-1874-1.NASL
    descriptionThis update for zsh to version 5.5 fixes the following issues: Security issues fixed : - CVE-2018-1100: Fixes a buffer overflow in utils.c:checkmailpath() that can lead to local arbitrary code execution (bsc#1089030) - CVE-2018-1071: Fixed a stack-based buffer overflow in exec.c:hashcmd() (bsc#1084656) - CVE-2018-1083: Fixed a stack-based buffer overflow in gen_matches_files() at compctl.c (bsc#1087026) Non-security issues fixed : - The effect of the NO_INTERACTIVE_COMMENTS option extends into $(...) and `...` command substitutions when used on the command line. - The
    last seen2020-03-21
    modified2019-01-02
    plugin id120028
    published2019-01-02
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/120028
    titleSUSE SLED15 / SLES15 Security Update : zsh (SUSE-SU-2018:1874-1)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2018-3073.NASL
    descriptionFrom Red Hat Security Advisory 2018:3073 : An update for zsh is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es) : * zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) * zsh: buffer overflow for very long fds in >& fd syntax (CVE-2014-10071) * zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) * zsh: NULL dereference in cd in sh compatibility mode under given circumstances (CVE-2017-18205) * zsh: buffer overrun in symlinks (CVE-2017-18206) * zsh: Stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071) * zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) * zsh: crash on copying empty hash table (CVE-2018-7549) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. The CVE-2018-1083, CVE-2018-1071, and CVE-2018-1100 issues were discovered by Richard Maciel Costa (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id118769
    published2018-11-07
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118769
    titleOracle Linux 7 : zsh (ELSA-2018-3073)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2018-1932.NASL
    descriptionFrom Red Hat Security Advisory 2018:1932 : An update for zsh is now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es) : * zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) * zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) * zsh: buffer overrun in symlinks (CVE-2017-18206) * zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. The CVE-2018-1083 and CVE-2018-1100 issues were discovered by Richard Maciel Costa (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.10 Release Notes and Red Hat Enterprise Linux 6.10 Technical Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id110707
    published2018-06-27
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110707
    titleOracle Linux 6 : zsh (ELSA-2018-1932)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3764-1.NASL
    descriptionIt was discovered that Zsh incorrectly handled certain scripts. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-0502, CVE-2018-13259) Richard Maciel Costa discovered that Zsh incorrectly handled certain scripts. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-1100). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id117456
    published2018-09-12
    reporterUbuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/117456
    titleUbuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : zsh vulnerabilities (USN-3764-1)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2018-3073.NASL
    descriptionAn update for zsh is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The zsh shell is a command interpreter usable as an interactive login shell and as a shell script command processor. Zsh resembles the ksh shell (the Korn shell), but includes many enhancements. Zsh supports command-line editing, built-in spelling correction, programmable command completion, shell functions (with autoloading), a history mechanism, and more. Security Fix(es) : * zsh: Stack-based buffer overflow in gen_matches_files() at compctl.c (CVE-2018-1083) * zsh: buffer overflow for very long fds in >& fd syntax (CVE-2014-10071) * zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) * zsh: NULL dereference in cd in sh compatibility mode under given circumstances (CVE-2017-18205) * zsh: buffer overrun in symlinks (CVE-2017-18206) * zsh: Stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071) * zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) * zsh: crash on copying empty hash table (CVE-2018-7549) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. The CVE-2018-1083, CVE-2018-1071, and CVE-2018-1100 issues were discovered by Richard Maciel Costa (Red Hat). Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.6 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id118524
    published2018-10-31
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118524
    titleRHEL 7 : zsh (RHSA-2018:3073)
  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2018-2_0-0050.NASL
    descriptionAn update of {'perl', 'libmspack', 'zsh'} packages of Photon OS has been released.
    last seen2019-02-21
    modified2019-02-07
    plugin id111305
    published2018-07-24
    reporterTenable
    sourcehttps://www.tenable.com/plugins/index.php?view=single&id=111305
    titlePhoton OS 2.0 : perl / libmspack / zsh (PhotonOS-PHSA-2018-2.0-0050) (deprecated)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2018-1396.NASL
    descriptionAccording to the versions of the zsh package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - zsh: buffer overflow for very long fds in i1/4zi1/4+ fd syntax (CVE-2014-10071) - zsh: buffer overflow when scanning very long directory paths for symbolic links (CVE-2014-10072) - zsh: NULL dereference in cd in sh compatibility mode under given circumstances (CVE-2017-18205) - zsh: buffer overrun in symlinks (CVE-2017-18206) - zsh: Stack-based buffer overflow in exec.c:hashcmd() (CVE-2018-1071) - zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution (CVE-2018-1100) - zsh: crash on copying empty hash table (CVE-2018-7549) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-05-15
    modified2018-12-10
    plugin id119524
    published2018-12-10
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/119524
    titleEulerOS 2.0 SP3 : zsh (EulerOS-SA-2018-1396)

Redhat

advisories
  • bugzilla
    id1563395
    titleCVE-2018-1100 zsh: buffer overflow in utils.c:checkmailpath() can lead to local arbitrary code execution
    oval
    OR
    • commentRed Hat Enterprise Linux must be installed
      ovaloval:com.redhat.rhba:tst:20070304026
    • AND
      • commentRed Hat Enterprise Linux 6 is installed
        ovaloval:com.redhat.rhba:tst:20111656003
      • OR
        • AND
          • commentzsh-html is earlier than 0:4.3.11-8.el6
            ovaloval:com.redhat.rhsa:tst:20181932001
          • commentzsh-html is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20181932002
        • AND
          • commentzsh is earlier than 0:4.3.11-8.el6
            ovaloval:com.redhat.rhsa:tst:20181932003
          • commentzsh is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20181932004
    rhsa
    idRHSA-2018:1932
    released2018-06-19
    severityModerate
    titleRHSA-2018:1932: zsh security update (Moderate)
  • rhsa
    idRHSA-2018:3073
rpms
  • zsh-0:4.3.11-8.el6
  • zsh-debuginfo-0:4.3.11-8.el6
  • zsh-html-0:4.3.11-8.el6
  • zsh-0:5.0.2-31.el7
  • zsh-debuginfo-0:5.0.2-31.el7
  • zsh-html-0:5.0.2-31.el7