Vulnerabilities > CVE-2016-0634 - OS Command Injection vulnerability in GNU Bash 4.3

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
high complexity
gnu
CWE-78
nessus

Summary

The expansion of '\h' in the prompt string in bash 4.3 allows remote authenticated users to execute arbitrary code via shell metacharacters placed in 'hostname' of a machine.

Vulnerable Configurations

Part Description Count
Application
Gnu
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
  • Command Delimiters
    An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or a blacklist input validation, as opposed to whitelist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or blacklist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
  • Exploiting Multiple Input Interpretation Layers
    An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.
  • Argument Injection
    An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.
  • OS Command Injection
    In this type of an attack, an adversary injects operating system commands into existing application functions. An application that uses untrusted input to build command strings is vulnerable. An adversary can leverage OS command injection in an application to elevate privileges, execute arbitrary commands and compromise the underlying operating system.

Nessus

  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2017-0040.NASL
    descriptionAn update of [openjdk,openjre,bash,libtar,glibc,libgcrypt,strongswan,unzip] packages for PhotonOS has been released.
    last seen2019-02-21
    modified2019-02-07
    plugin id111889
    published2018-08-17
    reporterTenable
    sourcehttps://www.tenable.com/plugins/index.php?view=single&id=111889
    titlePhoton OS 1.0: Bash / Glibc / Libgcrypt / Libtar / Openjdk / Openjre / Strongswan / Unzip PHSA-2017-0040 (deprecated)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # @DEPRECATED@
    #
    # Disabled on 2/7/2019
    #
    
    # The descriptive text and package checks in this plugin were
    # extracted from VMware Security Advisory PHSA-2017-0040. The text
    # itself is copyright (C) VMware, Inc.
    
    include("compat.inc");
    
    if (description)
    {
      script_id(111889);
      script_version("1.3");
      script_cvs_date("Date: 2019/04/05 23:25:07");
    
      script_cve_id(
        "CVE-2013-4420",
        "CVE-2014-9844",
        "CVE-2014-9913",
        "CVE-2016-0634",
        "CVE-2016-9844",
        "CVE-2017-9526",
        "CVE-2017-10274",
        "CVE-2017-10285",
        "CVE-2017-10309",
        "CVE-2017-10346",
        "CVE-2017-10388",
        "CVE-2017-11185",
        "CVE-2017-12133"
      );
    
      script_name(english:"Photon OS 1.0: Bash / Glibc / Libgcrypt / Libtar / Openjdk / Openjre / Strongswan / Unzip PHSA-2017-0040 (deprecated)");
      script_summary(english:"Checks the rpm output for the updated packages.");
    
      script_set_attribute(attribute:"synopsis", value:
    "This plugin has been deprecated.");
      script_set_attribute(attribute:"description", value:
    "An update of
    [openjdk,openjre,bash,libtar,glibc,libgcrypt,strongswan,unzip]
    packages for PhotonOS has been released.");
      # https://github.com/vmware/photon/wiki/Security-Updates-80
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b0fdbe24");
      script_set_attribute(attribute:"solution", value:"n/a.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H");
      script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
      script_set_attribute(attribute:"cvss_score_source", value:"CVE-2017-10285");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2017/10/24");
      script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/17");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:bash");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:glibc");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:libgcrypt");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:libtar");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:openjdk");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:openjre");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:strongswan");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:vmware:photonos:unzip");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:vmware:photonos:1.0");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"PhotonOS Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2018-2019 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);
    }
    
    exit(0, "This plugin has been deprecated.");
    
    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) 1\.0(\D|$)") audit(AUDIT_OS_NOT, "PhotonOS 1.0");
    
    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;
    
    pkgs = [
      "bash-4.3.48-1.ph1",
      "bash-debuginfo-4.3.48-1.ph1",
      "bash-lang-4.3.48-1.ph1",
      "glibc-2.22-14.ph1",
      "glibc-devel-2.22-14.ph1",
      "glibc-lang-2.22-14.ph1",
      "libgcrypt-1.7.6-3.ph1",
      "libgcrypt-debuginfo-1.7.6-3.ph1",
      "libgcrypt-devel-1.7.6-3.ph1",
      "libtar-1.2.20-3.ph1",
      "libtar-devel-1.2.20-3.ph1",
      "openjdk-1.8.0.151-1.ph1",
      "openjdk-debuginfo-1.8.0.151-1.ph1",
      "openjdk-doc-1.8.0.151-1.ph1",
      "openjdk-sample-1.8.0.151-1.ph1",
      "openjdk-src-1.8.0.151-1.ph1",
      "openjre-1.8.0.151-1.ph1",
      "strongswan-5.5.1-2.ph1",
      "strongswan-debuginfo-5.5.1-2.ph1",
      "unzip-6.0-8.ph1"
    ];
    
    foreach (pkg in pkgs)
      if (rpm_check(release:"PhotonOS-1.0", reference:pkg)) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_WARNING,
        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, "bash / glibc / libgcrypt / libtar / openjdk / openjre / strongswan / unzip");
    }
    
  • NASL familySlackware Local Security Checks
    NASL idSLACKWARE_SSA_2017-251-01.NASL
    descriptionNew bash packages are available for Slackware 13.1, 13.37, 14.0, 14.1, and 14.2 to fix security issues.
    last seen2020-06-01
    modified2020-06-02
    plugin id103089
    published2017-09-11
    reporterThis script is Copyright (C) 2017 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/103089
    titleSlackware 13.1 / 13.37 / 14.0 / 14.1 / 14.2 : bash (SSA:2017-251-01)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20170321_BASH_ON_SL6_X.NASL
    descriptionSecurity Fix(es) : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401)
    last seen2020-03-18
    modified2017-04-06
    plugin id99214
    published2017-04-06
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/99214
    titleScientific Linux Security Update : bash on SL6.x i386/x86_64 (20170321)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2017-0725.NASL
    descriptionAn update for bash 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 bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id97883
    published2017-03-22
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/97883
    titleRHEL 6 : bash (RHSA-2017:0725)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-1398-2.NASL
    descriptionThis update for bash fixes the following issues : Security issues fixed : CVE-2016-7543: A code execution possibility via SHELLOPTS+PS4 variable was fixed (bsc#1001299) CVE-2016-0634: Arbitrary code execution via malicious hostname was fixed (bsc#1000396) Non-security issues fixed: Fix repeating self-calling of traps due the combination of a non-interactive shell, a trap handler for SIGINT, an external process in the trap handler, and a SIGINT within the trap after the external process runs. (bsc#1086247) 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 id118257
    published2018-10-22
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/118257
    titleSUSE SLES12 Security Update : bash (SUSE-SU-2018:1398-2)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2016-1260.NASL
    descriptionThis update for bash fixes the following security issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt (bsc#1000396) This update also fixes the following bugs : - fix a crash found during debugging boo#971410 - boo#976776: crash if ~/.bash_history is empty (boo#976776)
    last seen2020-06-05
    modified2016-11-04
    plugin id94530
    published2016-11-04
    reporterThis script is Copyright (C) 2016-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/94530
    titleopenSUSE Security Update : bash (openSUSE-2016-1260)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-3294-1.NASL
    descriptionBernd Dietzel discovered that Bash incorrectly expanded the hostname when displaying the prompt. If a remote attacker were able to modify a hostname, this flaw could be exploited to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-0634) It was discovered that Bash incorrectly handled the SHELLOPTS and PS4 environment variables. A local attacker could use this issue to execute arbitrary code with root privileges. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7543) It was discovered that Bash incorrectly handled the popd command. A remote attacker could possibly use this issue to bypass restricted shells. (CVE-2016-9401) It was discovered that Bash incorrectly handled path autocompletion. A local attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 17.04. (CVE-2017-5932). 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 id100268
    published2017-05-18
    reporterUbuntu Security Notice (C) 2017-2019 Canonical, Inc. / NASL script (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/100268
    titleUbuntu 14.04 LTS / 16.04 LTS / 16.10 / 17.04 : bash vulnerabilities (USN-3294-1)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2017-1164.NASL
    descriptionAccording to the versions of the bash package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) 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
    modified2017-09-08
    plugin id103002
    published2017-09-08
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/103002
    titleEulerOS 2.0 SP2 : bash (EulerOS-SA-2017-1164)
  • NASL familyAmazon Linux Local Security Checks
    NASL idALA_ALAS-2017-878.NASL
    descriptionpopd controlled free : A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session.(CVE-2016-9401) Arbitrary code execution via malicious hostname : An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances.(CVE-2016-0634) Specially crafted SHELLOPTS+PS4 variables allows command substitution : An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543)
    last seen2020-06-01
    modified2020-06-02
    plugin id102866
    published2017-09-01
    reporterThis script is Copyright (C) 2017-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/102866
    titleAmazon Linux AMI : bash (ALAS-2017-878)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2017-0302-1.NASL
    descriptionThis update for bash fixes the following issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables. (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt. (bsc#1000396) The following bugs were fixed : - bsc#971410: Scripts could terminate unexpectedly due to mishandled recursive traps. - bsc#959755: Clarify that the files /etc/profile as well as /etc/bash.bashrc may source other files as well even if the bash does not. 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 id96868
    published2017-01-30
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/96868
    titleSUSE SLES11 Security Update : bash (SUSE-SU-2017:0302-1)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2017-1931.NASL
    descriptionAn update for bash 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 bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id102105
    published2017-08-02
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/102105
    titleRHEL 7 : bash (RHSA-2017:1931)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-A822B472C4.NASL
    descriptionSecurity fix for CVE-2016-0634. 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
    modified2016-09-27
    plugin id93728
    published2016-09-27
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/93728
    titleFedora 24 : bash (2016-a822b472c4)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2017-1931.NASL
    descriptionFrom Red Hat Security Advisory 2017:1931 : An update for bash 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 bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id102289
    published2017-08-09
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/102289
    titleOracle Linux 7 : bash (ELSA-2017-1931)
  • NASL familyScientific Linux Local Security Checks
    NASL idSL_20170801_BASH_ON_SL7_X.NASL
    descriptionSecurity Fix(es) : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401)
    last seen2020-03-18
    modified2017-08-22
    plugin id102638
    published2017-08-22
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/102638
    titleScientific Linux Security Update : bash on SL7.x x86_64 (20170801)
  • NASL familyPhotonOS Local Security Checks
    NASL idPHOTONOS_PHSA-2017-0040_BASH.NASL
    descriptionAn update of the bash package has been released.
    last seen2020-03-17
    modified2019-02-07
    plugin id121741
    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/121741
    titlePhoton OS 1.0: Bash PHSA-2017-0040
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2017-1931.NASL
    descriptionAn update for bash 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 bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id102744
    published2017-08-25
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/102744
    titleCentOS 7 : bash (CESA-2017:1931)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201612-39.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201612-39 (Bash: Arbitrary code execution) A vulnerability was found in the way Bash expands $HOSTNAME. Injecting malicious code into $HOSTNAME could cause it to run each time Bash expands \\h in the prompt string. Impact : A remote attacker controlling the system&rsquo;s hostname (i.e. via DHCP) could possibly execute arbitrary code with the privileges of the process, or cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id95742
    published2016-12-13
    reporterThis script is Copyright (C) 2016-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/95742
    titleGLSA-201612-39 : Bash: Arbitrary code execution
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2018-516.NASL
    descriptionThis update for bash fixes the following issues : Security issues fixed : - CVE-2016-7543: A code execution possibility via SHELLOPTS+PS4 variable was fixed (bsc#1001299) - CVE-2016-0634: Arbitrary code execution via malicious hostname was fixed (bsc#1000396) Non-security issues fixed : - Fix repeating self-calling of traps due the combination of a non-interactive shell, a trap handler for SIGINT, an external process in the trap handler, and a SIGINT within the trap after the external process runs. (bsc#1086247) This update was imported from the SUSE:SLE-12-SP2:Update update project.
    last seen2020-06-05
    modified2018-05-25
    plugin id110106
    published2018-05-25
    reporterThis script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110106
    titleopenSUSE Security Update : bash (openSUSE-2018-516)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-EDA100D886.NASL
    descriptionSecurity fix for CVE-2016-0634. 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
    modified2016-11-15
    plugin id94876
    published2016-11-15
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/94876
    titleFedora 25 : bash (2016-eda100d886)
  • NASL familyOracleVM Local Security Checks
    NASL idORACLEVM_OVMSA-2017-0050.NASL
    descriptionThe remote OracleVM system is missing necessary patches to address critical security updates : - Fix signal handling in read builtin Resolves: #1421926 - CVE-2016-9401 - Fix crash when
    last seen2020-06-01
    modified2020-06-02
    plugin id99077
    published2017-03-30
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/99077
    titleOracleVM 3.3 / 3.4 : bash (OVMSA-2017-0050)
  • NASL familyNewStart CGSL Local Security Checks
    NASL idNEWSTART_CGSL_NS-SA-2019-0108_BASH.NASL
    descriptionThe remote NewStart CGSL host, running version MAIN 4.05, has bash packages installed that are affected by multiple vulnerabilities: - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) 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 id127342
    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/127342
    titleNewStart CGSL MAIN 4.05 : bash Multiple Vulnerabilities (NS-SA-2019-0108)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2016-2872-1.NASL
    descriptionThis update for bash fixes the following issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt (bsc#1000396) - CVE-2014-6277: More troubles with functions (bsc#898812, bsc#1001759) - CVE-2014-6278: Code execution after original 6271 fix (bsc#898884) 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 id95282
    published2016-11-23
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/95282
    titleSUSE SLED12 / SLES12 Security Update : bash (SUSE-SU-2016:2872-1) (Shellshock)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2016-1374.NASL
    descriptionThis update for bash fixes the following issues : - CVE-2016-7543: Local attackers could have executed arbitrary commands via specially crafted SHELLOPTS+PS4 variables (bsc#1001299) - CVE-2016-0634: Malicious hostnames could have allowed arbitrary command execution when $HOSTNAME was expanded in the prompt (bsc#1000396) - CVE-2014-6277: More troubles with functions (bsc#898812, bsc#1001759) - CVE-2014-6278: Code execution after original 6271 fix (bsc#898884) This update was imported from the SUSE:SLE-12:Update update project.
    last seen2020-06-05
    modified2016-12-05
    plugin id95529
    published2016-12-05
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/95529
    titleopenSUSE Security Update : bash (openSUSE-2016-1374) (Shellshock)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2018-1398-1.NASL
    descriptionThis update for bash fixes the following issues: Security issues fixed : - CVE-2016-7543: A code execution possibility via SHELLOPTS+PS4 variable was fixed (bsc#1001299) - CVE-2016-0634: Arbitrary code execution via malicious hostname was fixed (bsc#1000396) Non-security issues fixed : - Fix repeating self-calling of traps due the combination of a non-interactive shell, a trap handler for SIGINT, an external process in the trap handler, and a SIGINT within the trap after the external process runs. (bsc#1086247) 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 id110092
    published2018-05-24
    reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/110092
    titleSUSE SLED12 / SLES12 Security Update : bash (SUSE-SU-2018:1398-1)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2017-0725.NASL
    descriptionAn update for bash 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 bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id97959
    published2017-03-27
    reporterThis script is Copyright (C) 2017 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/97959
    titleCentOS 6 : bash (CESA-2017:0725)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-62E6C462EF.NASL
    descriptionSecurity fix for CVE-2016-0634. 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
    modified2016-09-27
    plugin id93725
    published2016-09-27
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/93725
    titleFedora 23 : bash (2016-62e6c462ef)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2017-0725.NASL
    descriptionFrom Red Hat Security Advisory 2017:0725 : An update for bash 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 bash packages provide Bash (Bourne-again shell), which is the default shell for Red Hat Enterprise Linux. Security Fix(es) : * An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) * An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) * A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) Additional Changes : For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.
    last seen2020-06-01
    modified2020-06-02
    plugin id99071
    published2017-03-30
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/99071
    titleOracle Linux 6 : bash (ELSA-2017-0725)
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2017-1163.NASL
    descriptionAccording to the versions of the bash package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - An arbitrary command injection flaw was found in the way bash processed the hostname value. A malicious DHCP server could use this flaw to execute arbitrary commands on the DHCP client machines running bash under specific circumstances. (CVE-2016-0634) - An arbitrary command injection flaw was found in the way bash processed the SHELLOPTS and PS4 environment variables. A local, authenticated attacker could use this flaw to exploit poorly written setuid programs to elevate their privileges under certain circumstances. (CVE-2016-7543) - A denial of service flaw was found in the way bash handled popd commands. A poorly written shell script could cause bash to crash resulting in a local denial of service limited to a specific bash session. (CVE-2016-9401) 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
    modified2017-09-08
    plugin id103001
    published2017-09-08
    reporterThis script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/103001
    titleEulerOS 2.0 SP1 : bash (EulerOS-SA-2017-1163)

Redhat

advisories
  • rhsa
    idRHSA-2017:0725
  • rhsa
    idRHSA-2017:1931
rpms
  • bash-0:4.1.2-48.el6
  • bash-debuginfo-0:4.1.2-48.el6
  • bash-doc-0:4.1.2-48.el6
  • bash-0:4.2.46-28.el7
  • bash-debuginfo-0:4.2.46-28.el7
  • bash-doc-0:4.2.46-28.el7