Vulnerabilities > CVE-2015-8710 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in multiple products

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
xmlsoft
debian
CWE-119
nessus

Summary

The htmlParseComment function in HTMLparser.c in libxml2 allows attackers to obtain sensitive information, cause a denial of service (out-of-bounds heap memory access and application crash), or possibly have unspecified other impact via an unclosed HTML comment.

Vulnerable Configurations

Part Description Count
Application
Xmlsoft
147
OS
Debian
3

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 familyF5 Networks Local Security Checks
    NASL idF5_BIGIP_SOL45439210.NASL
    descriptionThe htmlParseComment function in HTMLparser.c in libxml2 allows attackers to obtain sensitive information, cause a denial of service (out-of-bounds heap memory access and application crash), or possibly have unspecified other impact via an unclosed HTML comment. (CVE-2015-8710)
    last seen2020-06-01
    modified2020-06-02
    plugin id101858
    published2017-07-21
    reporterThis script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/101858
    titleF5 Networks BIG-IP : libxml2 vulnerability (K45439210)
  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-2875-1.NASL
    descriptionIt was discovered that libxml2 incorrectly handled certain malformed documents. If a user or automated system were tricked into opening a specially crafted document, an attacker could possibly cause libxml2 to crash, resulting in a denial of service. 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 id88019
    published2016-01-20
    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/88019
    titleUbuntu 12.04 LTS / 14.04 LTS / 15.04 / 15.10 : libxml2 vulnerabilities (USN-2875-1)
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2016-68.NASL
    descriptionThis update for libxml2 fixes the following security issue : - CVE-2015-8710: Parsing short unclosed HTML comment could cause uninitialized memory access, which allowed remote attackers to read contents from previous HTTP requests depending on the application (bsc#960674) This update was imported from the SUSE:SLE-12:Update update project.
    last seen2020-06-05
    modified2016-01-25
    plugin id88135
    published2016-01-25
    reporterThis script is Copyright (C) 2016-2020 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/88135
    titleopenSUSE Security Update : libxml2 (openSUSE-2016-68)
  • NASL familyAmazon Linux Local Security Checks
    NASL idAL2_ALAS-2019-1220.NASL
    descriptionA denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-8242) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7500) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-8317) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7497) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7498) A denial of service flaw was found in the way the libxml2 library parsed certain XML files. An attacker could provide a specially crafted XML file that, when parsed by an application using libxml2, could cause that application to use an excessive amount of memory.(CVE-2015-1819) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to crash.(CVE-2015-7941) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-7499) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to leak potentially sensitive information.(CVE-2015-8241) A denial of service flaw was found in libxml2. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to use an excessive amount of CPU.(CVE-2015-5312) A heap-based buffer overflow flaw was found in the way libxml2 parsed certain crafted XML input. A remote attacker could provide a specially crafted XML file that, when opened in an application linked against libxml2, would cause the application to crash causing a denial of service.(CVE-2015-7942) It was discovered that libxml2 could access out-of-bounds memory when parsing unclosed HTML comments. A remote attacker could provide a specially crafted XML file that, when processed by an application linked against libxml2, could cause the application to disclose heap memory contents.(CVE-2015-8710)
    last seen2020-06-01
    modified2020-06-02
    plugin id125603
    published2019-05-31
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/125603
    titleAmazon Linux 2 : libxml2 (ALAS-2019-1220)
  • NASL familyCentOS Local Security Checks
    NASL idCENTOS_RHSA-2015-2550.NASL
    descriptionUpdated libxml2 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The libxml2 library is a development toolbox providing the implementation of various XML standards. Several denial of service flaws were found in libxml2, a library providing support for reading, modifying, and writing XML and HTML files. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to use an excessive amount of CPU, leak potentially sensitive information, or in certain cases crash the application. (CVE-2015-1819, CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500 CVE-2015-7941, CVE-2015-7942, CVE-2015-8241, CVE-2015-8242, CVE-2015-8317, BZ#1213957, BZ#1281955) Red Hat would like to thank the GNOME project for reporting CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-8241, CVE-2015-8242, and CVE-2015-8317. Upstream acknowledges Kostya Serebryany of Google as the original reporter of CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, and CVE-2015-7500; Hugh Davenport as the original reporter of CVE-2015-8241 and CVE-2015-8242; and Hanno Boeck as the original reporter of CVE-2015-8317. The CVE-2015-1819 issue was discovered by Florian Weimer of Red Hat Product Security. All libxml2 users are advised to upgrade to these updated packages, which contain a backported patch to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen2020-04-16
    modified2015-12-08
    plugin id87224
    published2015-12-08
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87224
    titleCentOS 7 : libxml2 (CESA-2015:2550)
  • NASL familyOracle Linux Local Security Checks
    NASL idORACLELINUX_ELSA-2015-2550.NASL
    descriptionFrom Red Hat Security Advisory 2015:2550 : Updated libxml2 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The libxml2 library is a development toolbox providing the implementation of various XML standards. Several denial of service flaws were found in libxml2, a library providing support for reading, modifying, and writing XML and HTML files. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to use an excessive amount of CPU, leak potentially sensitive information, or in certain cases crash the application. (CVE-2015-1819, CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500 CVE-2015-7941, CVE-2015-7942, CVE-2015-8241, CVE-2015-8242, CVE-2015-8317, BZ#1213957, BZ#1281955) Red Hat would like to thank the GNOME project for reporting CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-8241, CVE-2015-8242, and CVE-2015-8317. Upstream acknowledges Kostya Serebryany of Google as the original reporter of CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, and CVE-2015-7500; Hugh Davenport as the original reporter of CVE-2015-8241 and CVE-2015-8242; and Hanno Boeck as the original reporter of CVE-2015-8317. The CVE-2015-1819 issue was discovered by Florian Weimer of Red Hat Product Security. All libxml2 users are advised to upgrade to these updated packages, which contain a backported patch to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen2020-04-16
    modified2015-12-08
    plugin id87231
    published2015-12-08
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87231
    titleOracle Linux 7 : libxml2 (ELSA-2015-2550)
  • NASL familyRed Hat Local Security Checks
    NASL idREDHAT-RHSA-2015-2550.NASL
    descriptionUpdated libxml2 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The libxml2 library is a development toolbox providing the implementation of various XML standards. Several denial of service flaws were found in libxml2, a library providing support for reading, modifying, and writing XML and HTML files. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to use an excessive amount of CPU, leak potentially sensitive information, or in certain cases crash the application. (CVE-2015-1819, CVE-2015-5312, CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500 CVE-2015-7941, CVE-2015-7942, CVE-2015-8241, CVE-2015-8242, CVE-2015-8317, BZ#1213957, BZ#1281955) Red Hat would like to thank the GNOME project for reporting CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, CVE-2015-7500, CVE-2015-8241, CVE-2015-8242, and CVE-2015-8317. Upstream acknowledges Kostya Serebryany of Google as the original reporter of CVE-2015-7497, CVE-2015-7498, CVE-2015-7499, and CVE-2015-7500; Hugh Davenport as the original reporter of CVE-2015-8241 and CVE-2015-8242; and Hanno Boeck as the original reporter of CVE-2015-8317. The CVE-2015-1819 issue was discovered by Florian Weimer of Red Hat Product Security. All libxml2 users are advised to upgrade to these updated packages, which contain a backported patch to correct these issues. The desktop must be restarted (log out, then log back in) for this update to take effect.
    last seen2020-04-10
    modified2015-12-08
    plugin id87234
    published2015-12-08
    reporterThis script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87234
    titleRHEL 7 : libxml2 (RHSA-2015:2550)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2016-0178-1.NASL
    descriptionThis update for libxml2 fixes the following security issue : - CVE-2015-8710: Parsing short unclosed HTML comment could cause uninitialized memory access, which allowed remote attackers to read contents from previous HTTP requests depending on the application (bsc#960674) 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 id88038
    published2016-01-21
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/88038
    titleSUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2016:0178-1)
  • NASL familySuSE Local Security Checks
    NASL idSUSE_SU-2016-0187-1.NASL
    descriptionThis update for libxml2 fixes the following security issue : - CVE-2015-8710: Parsing short unclosed HTML comment could cause uninitialized memory access, which allowed remote attackers to read contents from previous HTTP requests depending on the application (bsc#960674) 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 id88081
    published2016-01-22
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/88081
    titleSUSE SLED11 / SLES11 Security Update : libxml2 (SUSE-SU-2016:0187-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3430.NASL
    descriptionSeveral vulnerabilities were discovered in libxml2, a library providing support to read, modify and write XML and HTML files. A remote attacker could provide a specially crafted XML or HTML file that, when processed by an application using libxml2, would cause that application to use an excessive amount of CPU, leak potentially sensitive information, or crash the application.
    last seen2020-06-01
    modified2020-06-02
    plugin id87608
    published2015-12-29
    reporterThis script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/87608
    titleDebian DSA-3430-1 : libxml2 - security update

Redhat

advisories
  • bugzilla
    id1281955
    titlelibxml2: Multiple out-of-bounds reads in xmlDictComputeFastKey.isra.2 and xmlDictAddString.isra.O
    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
          • commentlibxml2-devel is earlier than 0:2.7.6-20.el6_7.1
            ovaloval:com.redhat.rhsa:tst:20152549001
          • commentlibxml2-devel is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749004
        • AND
          • commentlibxml2-static is earlier than 0:2.7.6-20.el6_7.1
            ovaloval:com.redhat.rhsa:tst:20152549003
          • commentlibxml2-static is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749002
        • AND
          • commentlibxml2 is earlier than 0:2.7.6-20.el6_7.1
            ovaloval:com.redhat.rhsa:tst:20152549005
          • commentlibxml2 is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749006
        • AND
          • commentlibxml2-python is earlier than 0:2.7.6-20.el6_7.1
            ovaloval:com.redhat.rhsa:tst:20152549007
          • commentlibxml2-python is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749008
    rhsa
    idRHSA-2015:2549
    released2015-12-07
    severityModerate
    titleRHSA-2015:2549: libxml2 security update (Moderate)
  • bugzilla
    id1281955
    titlelibxml2: Multiple out-of-bounds reads in xmlDictComputeFastKey.isra.2 and xmlDictAddString.isra.O
    oval
    OR
    • commentRed Hat Enterprise Linux must be installed
      ovaloval:com.redhat.rhba:tst:20070304026
    • AND
      • commentRed Hat Enterprise Linux 7 is installed
        ovaloval:com.redhat.rhba:tst:20150364027
      • OR
        • AND
          • commentlibxml2-static is earlier than 0:2.9.1-6.el7_2.2
            ovaloval:com.redhat.rhsa:tst:20152550001
          • commentlibxml2-static is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749002
        • AND
          • commentlibxml2-devel is earlier than 0:2.9.1-6.el7_2.2
            ovaloval:com.redhat.rhsa:tst:20152550003
          • commentlibxml2-devel is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749004
        • AND
          • commentlibxml2-python is earlier than 0:2.9.1-6.el7_2.2
            ovaloval:com.redhat.rhsa:tst:20152550005
          • commentlibxml2-python is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749008
        • AND
          • commentlibxml2 is earlier than 0:2.9.1-6.el7_2.2
            ovaloval:com.redhat.rhsa:tst:20152550007
          • commentlibxml2 is signed with Red Hat redhatrelease2 key
            ovaloval:com.redhat.rhsa:tst:20111749006
    rhsa
    idRHSA-2015:2550
    released2015-12-07
    severityModerate
    titleRHSA-2015:2550: libxml2 security update (Moderate)
  • rhsa
    idRHSA-2016:1089
rpms
  • libxml2-0:2.7.6-20.el6_7.1
  • libxml2-debuginfo-0:2.7.6-20.el6_7.1
  • libxml2-devel-0:2.7.6-20.el6_7.1
  • libxml2-python-0:2.7.6-20.el6_7.1
  • libxml2-static-0:2.7.6-20.el6_7.1
  • libxml2-0:2.9.1-6.el7_2.2
  • libxml2-debuginfo-0:2.9.1-6.el7_2.2
  • libxml2-devel-0:2.9.1-6.el7_2.2
  • libxml2-python-0:2.9.1-6.el7_2.2
  • libxml2-static-0:2.9.1-6.el7_2.2