Vulnerabilities > CVE-2016-2851 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
debian
opensuse
cypherpunks
CWE-119
critical
nessus
exploit available

Summary

Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms allows remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via a series of large OTR messages, which triggers a heap-based buffer overflow.

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.

Exploit-Db

descriptionlibotr 4.1.0 - Memory Corruption. CVE-2016-2851. Dos exploits for multiple platform
fileexploits/multiple/dos/39550.py
idEDB-ID:39550
last seen2016-03-11
modified2016-03-10
platformmultiple
port
published2016-03-10
reporterX41 D-Sec GmbH
sourcehttps://www.exploit-db.com/download/39550/
titlelibotr <= 4.1.0 - Memory Corruption
typedos

Nessus

  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2016-0706-1.NASL
    descriptionThis update for libotr fixes the following issues : - Apply
    last seen2020-06-01
    modified2020-06-02
    plugin id89918
    published2016-03-14
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89918
    titleSUSE SLED11 / SLES11 Security Update : libotr (SUSE-SU-2016:0706-1)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from SUSE update advisory SUSE-SU-2016:0706-1.
    # The text itself is copyright (C) SUSE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(89918);
      script_version("2.11");
      script_cvs_date("Date: 2019/09/11 11:22:13");
    
      script_cve_id("CVE-2016-2851");
    
      script_name(english:"SUSE SLED11 / SLES11 Security Update : libotr (SUSE-SU-2016:0706-1)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote SUSE host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This update for libotr fixes the following issues :
    
      - Apply 'libotr-CVE-2016-2851.patch' to fix integer
        overflows that used to occur on 64-bit architectures
        when receiving 4GB messages. This flaw could potentially
        have been exploited by an attacker to remotely execute
        arbitrary code on the user's machine. (CVE-2016-2851,
        bsc#969785)
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=969785"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2016-2851/"
      );
      # https://www.suse.com/support/update/announcement/2016/suse-su-20160706-1/
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?80761a90"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "To install this SUSE Security Update use YaST online_update.
    Alternatively you can run the command listed for your product :
    
    SUSE Linux Enterprise Software Development Kit 11-SP4 :
    
    zypper in -t patch sdksp4-libotr-12442=1
    
    SUSE Linux Enterprise Server 11-SP4 :
    
    zypper in -t patch slessp4-libotr-12442=1
    
    SUSE Linux Enterprise Desktop 11-SP4 :
    
    zypper in -t patch sledsp4-libotr-12442=1
    
    SUSE Linux Enterprise Debuginfo 11-SP4 :
    
    zypper in -t patch dbgsp4-libotr-12442=1
    
    To bring your system up-to-date, use 'zypper patch'."
      );
      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:POC/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:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libotr2");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/04/07");
      script_set_attribute(attribute:"patch_publication_date", value:"2016/03/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/14");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"SuSE Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
    if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
    os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
    os_ver = os_ver[1];
    if (! preg(pattern:"^(SLED11|SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED11 / SLES11", "SUSE " + os_ver);
    
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
    
    sp = get_kb_item("Host/SuSE/patchlevel");
    if (isnull(sp)) sp = "0";
    if (os_ver == "SLES11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP4", os_ver + " SP" + sp);
    if (os_ver == "SLED11" && (! preg(pattern:"^(4)$", string:sp))) audit(AUDIT_OS_NOT, "SLED11 SP4", os_ver + " SP" + sp);
    
    
    flag = 0;
    if (rpm_check(release:"SLES11", sp:"4", reference:"libotr2-3.2.0-10.5.1")) flag++;
    if (rpm_check(release:"SLED11", sp:"4", cpu:"x86_64", reference:"libotr2-3.2.0-10.5.1")) flag++;
    if (rpm_check(release:"SLED11", sp:"4", cpu:"i586", reference:"libotr2-3.2.0-10.5.1")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libotr");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-FDE759F627.NASL
    descriptionUpdated to 4.1.1 for CVE-2016-2851 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-03-21
    plugin id90048
    published2016-03-21
    reporterThis script is Copyright (C) 2016-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/90048
    titleFedora 22 : libotr-4.1.1-1.fc22 (2016-fde759f627)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory 2016-fde759f627.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(90048);
      script_version("2.2");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_xref(name:"FEDORA", value:"2016-fde759f627");
    
      script_name(english:"Fedora 22 : libotr-4.1.1-1.fc22 (2016-fde759f627)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "Updated to 4.1.1 for CVE-2016-2851
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues."
      );
      # https://lists.fedoraproject.org/pipermail/package-announce/2016-March/179065.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?4846a6c0"
      );
      script_set_attribute(
        attribute:"solution", 
        value:"Update the affected libotr package."
      );
      script_set_attribute(attribute:"risk_factor", value:"High");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:libotr");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:22");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2016/03/19");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/21");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2020 Tenable Network Security, Inc.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/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/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! ereg(pattern:"^22([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 22.x", "Fedora " + os_ver);
    
    if (!get_kb_item("Host/RedHat/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, "Fedora", cpu);
    
    flag = 0;
    if (rpm_check(release:"FC22", reference:"libotr-4.1.1-1.fc22")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libotr");
    }
    
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2016-0707-1.NASL
    descriptionThis update for libotr fixes the following issue : - Apply
    last seen2020-06-01
    modified2020-06-02
    plugin id89919
    published2016-03-14
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89919
    titleSUSE SLED12 / SLES12 Security Update : libotr (SUSE-SU-2016:0707-1)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were
    # extracted from SUSE update advisory SUSE-SU-2016:0707-1.
    # The text itself is copyright (C) SUSE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(89919);
      script_version("2.13");
      script_cvs_date("Date: 2019/09/11 11:22:13");
    
      script_cve_id("CVE-2016-2851");
    
      script_name(english:"SUSE SLED12 / SLES12 Security Update : libotr (SUSE-SU-2016:0707-1)");
      script_summary(english:"Checks rpm output for the updated packages.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote SUSE host is missing one or more security updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "This update for libotr fixes the following issue :
    
      - Apply 'libotr-CVE-2016-2851.patch' to fix integer
        overflows that used to occur on 64-bit architectures
        when receiving 4GB messages. This flaw could potentially
        have been exploited by an attacker to remotely execute
        arbitrary code on the user's machine
    
      - (CVE-2016-2851, bsc#969785)
    
    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."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://bugzilla.suse.com/show_bug.cgi?id=969785"
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.suse.com/security/cve/CVE-2016-2851/"
      );
      # https://www.suse.com/support/update/announcement/2016/suse-su-20160707-1/
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?c6ade7f6"
      );
      script_set_attribute(
        attribute:"solution", 
        value:
    "To install this SUSE Security Update use YaST online_update.
    Alternatively you can run the command listed for your product :
    
    SUSE Linux Enterprise Software Development Kit 12-SP1 :
    
    zypper in -t patch SUSE-SLE-SDK-12-SP1-2016-404=1
    
    SUSE Linux Enterprise Software Development Kit 12 :
    
    zypper in -t patch SUSE-SLE-SDK-12-2016-404=1
    
    SUSE Linux Enterprise Server 12-SP1 :
    
    zypper in -t patch SUSE-SLE-SERVER-12-SP1-2016-404=1
    
    SUSE Linux Enterprise Server 12 :
    
    zypper in -t patch SUSE-SLE-SERVER-12-2016-404=1
    
    SUSE Linux Enterprise Desktop 12-SP1 :
    
    zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2016-404=1
    
    SUSE Linux Enterprise Desktop 12 :
    
    zypper in -t patch SUSE-SLE-DESKTOP-12-2016-404=1
    
    To bring your system up-to-date, use 'zypper patch'."
      );
      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:POC/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:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libotr-debugsource");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libotr5");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libotr5-debuginfo");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/04/07");
      script_set_attribute(attribute:"patch_publication_date", value:"2016/03/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/14");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"SuSE Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
    if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
    os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
    os_ver = os_ver[1];
    if (! preg(pattern:"^(SLED12|SLES12)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED12 / SLES12", "SUSE " + os_ver);
    
    if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    cpu = get_kb_item("Host/cpu");
    if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
    if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);
    
    sp = get_kb_item("Host/SuSE/patchlevel");
    if (isnull(sp)) sp = "0";
    if (os_ver == "SLES12" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLES12 SP0/1", os_ver + " SP" + sp);
    if (os_ver == "SLED12" && (! preg(pattern:"^(0|1)$", string:sp))) audit(AUDIT_OS_NOT, "SLED12 SP0/1", os_ver + " SP" + sp);
    
    
    flag = 0;
    if (rpm_check(release:"SLES12", sp:"1", reference:"libotr-debugsource-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"1", reference:"libotr5-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"1", reference:"libotr5-debuginfo-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"0", reference:"libotr-debugsource-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"0", reference:"libotr5-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLES12", sp:"0", reference:"libotr5-debuginfo-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libotr-debugsource-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libotr5-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"1", cpu:"x86_64", reference:"libotr5-debuginfo-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libotr-debugsource-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libotr5-4.0.0-9.1")) flag++;
    if (rpm_check(release:"SLED12", sp:"0", cpu:"x86_64", reference:"libotr5-debuginfo-4.0.0-9.1")) flag++;
    
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
      else security_hole(0);
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "libotr");
    }
    
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_C2B1652CE64711E585BE14DAE9D210B8.NASL
    descriptionX41 D-Sec reports : A remote attacker may crash or execute arbitrary code in libotr by sending large OTR messages.
    last seen2020-06-01
    modified2020-06-02
    plugin id89808
    published2016-03-10
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89808
    titleFreeBSD : libotr -- integer overflow (c2b1652c-e647-11e5-85be-14dae9d210b8)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from the FreeBSD VuXML database :
    #
    # Copyright 2003-2018 Jacques Vidrine and contributors
    #
    # Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
    # HTML, PDF, PostScript, RTF and so forth) with or without modification,
    # are permitted provided that the following conditions are met:
    # 1. Redistributions of source code (VuXML) must retain the above
    #    copyright notice, this list of conditions and the following
    #    disclaimer as the first lines of this file unmodified.
    # 2. Redistributions in compiled form (transformed to other DTDs,
    #    published online in any format, converted to PDF, PostScript,
    #    RTF and other formats) must reproduce the above copyright
    #    notice, this list of conditions and the following disclaimer
    #    in the documentation and/or other materials provided with the
    #    distribution.
    # 
    # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
    # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
    # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
    # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
    # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
    # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
    # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
    # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(89808);
      script_version("2.5");
      script_cvs_date("Date: 2019/04/11 17:23:06");
    
      script_cve_id("CVE-2016-2851");
    
      script_name(english:"FreeBSD : libotr -- integer overflow (c2b1652c-e647-11e5-85be-14dae9d210b8)");
      script_summary(english:"Checks for updated packages in pkg_info output");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote FreeBSD host is missing one or more security-related
    updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "X41 D-Sec reports :
    
    A remote attacker may crash or execute arbitrary code in libotr by
    sending large OTR messages."
      );
      script_set_attribute(
        attribute:"see_also",
        value:"https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/"
      );
      # https://vuxml.freebsd.org/freebsd/c2b1652c-e647-11e5-85be-14dae9d210b8.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?a04c9b35"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected 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:POC/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:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:libotr");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:libotr3");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/02/17");
      script_set_attribute(attribute:"patch_publication_date", value:"2016/03/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/03/10");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"FreeBSD Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("freebsd_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
    if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    flag = 0;
    
    if (pkg_test(save_report:TRUE, pkg:"libotr<4.1.1")) flag++;
    if (pkg_test(save_report:TRUE, pkg:"libotr3>=0")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
      else security_hole(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201701-10.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201701-10 (libotr, Pidgin OTR: Remote execution of arbitrary code) Multiple vulnerabilities exist in both libotr and Pidgin OTR. Please review the CVE identifiers for more information. Impact : A remote attacker could send a specially crafted message, possibly resulting in the execution of 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 id96241
    published2017-01-03
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/96241
    titleGLSA-201701-10 : libotr, Pidgin OTR: Remote execution of arbitrary code
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2016-333.NASL
    descriptionlibotr and libotr2 were updated to fix one security issue : - CVE-2016-2851: Integer overflow vulnerability allowed remote attackers to execute arbitrary code on 64 bit platforms (boo#969785)
    last seen2020-06-05
    modified2016-03-14
    plugin id89914
    published2016-03-14
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89914
    titleopenSUSE Security Update : libotr / libotr2 (openSUSE-2016-333)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2016-322.NASL
    descriptionlibotr and libotr2 were updated to fix one security issue : - CVE-2016-2851: Integer overflow vulnerability allowed remote attackers to execute arbitrary code on 64 bit platforms (boo#969785)
    last seen2020-06-05
    modified2016-03-11
    plugin id89855
    published2016-03-11
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89855
    titleopenSUSE Security Update : libotr / libotr2 (openSUSE-2016-322)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-8B4F643F3D.NASL
    descriptionUpdated to 4.1.1 for CVE-2016-2851 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-03-21
    plugin id90041
    published2016-03-21
    reporterThis script is Copyright (C) 2016-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/90041
    titleFedora 23 : libotr-4.1.1-1.fc23 (2016-8b4f643f3d)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-2926-1.NASL
    descriptionMarkus Vervier discovered that OTR incorrectly handled large incoming messages. A remote attacker could use this issue to cause OTR to crash, resulting in a denial of service, or possibly execute arbitrary code. 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 id89866
    published2016-03-11
    reporterUbuntu Security Notice (C) 2016-2019 Canonical, Inc. / NASL script (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89866
    titleUbuntu 12.04 LTS : libotr vulnerability (USN-2926-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3512.NASL
    descriptionMarkus Vervier of X41 D-Sec GmbH discovered an integer overflow vulnerability in libotr, an off-the-record (OTR) messaging library, in the way how the sizes of portions of incoming messages were stored. A remote attacker can exploit this flaw by sending crafted messages to an application that is using libotr to perform denial of service attacks (application crash), or potentially, execute arbitrary code with the privileges of the user running the application.
    last seen2020-06-01
    modified2020-06-02
    plugin id89794
    published2016-03-10
    reporterThis script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/89794
    titleDebian DSA-3512-1 : libotr - security update
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-2982F06845.NASL
    descriptionUpdated to 4.1.1 for CVE-2016-2851 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-03-28
    plugin id90211
    published2016-03-28
    reporterThis script is Copyright (C) 2016-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/90211
    titleFedora 24 : libotr-4.1.1-1.fc24 (2016-2982f06845)

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/136167/X41-2016-001.txt
idPACKETSTORM:136167
last seen2016-12-05
published2016-03-11
reporterMarkus Vervier
sourcehttps://packetstormsecurity.com/files/136167/libotr-4.1.0-Memory-Corruption.html
titlelibotr 4.1.0 Memory Corruption