rhsa-2012_0017
Vulnerability from csaf_redhat
Published
2012-01-11 17:43
Modified
2024-11-22 06:04
Summary
Red Hat Security Advisory: libxml2 security update
Notes
Topic
Updated libxml2 packages that fix several security issues are now available
for Red Hat Enterprise Linux 5.
The Red Hat Security Response Team has rated this update as having
important 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.
Details
The libxml2 library is a development toolbox providing the implementation
of various XML standards. One of those standards is the XML Path Language
(XPath), which is a language for addressing parts of an XML document.
A heap-based buffer overflow flaw was found in the way libxml2 decoded
entity references with long names. 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 or, potentially,
execute arbitrary code with the privileges of the user running the
application. (CVE-2011-3919)
An off-by-one error, leading to a heap-based buffer overflow, was found in
the way libxml2 parsed certain XML files. 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 or, potentially,
execute arbitrary code with the privileges of the user running the
application. (CVE-2011-0216)
An integer overflow flaw, leading to a heap-based buffer overflow, was
found in the way libxml2 parsed certain XPath expressions. If an attacker
were able to supply a specially-crafted XML file to an application using
libxml2, as well as an XPath expression for that application to run against
the crafted file, it could cause the application to crash or, possibly,
execute arbitrary code. (CVE-2011-1944)
Flaws were found in the way libxml2 parsed certain XPath expressions. If an
attacker were able to supply a specially-crafted XML file to an application
using libxml2, as well as an XPath expression for that application to run
against the crafted file, it could cause the application to crash.
(CVE-2010-4008, CVE-2011-2834)
An out-of-bounds memory read flaw was found in libxml2. 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.
(CVE-2011-3905)
Note: Red Hat does not ship any applications that use libxml2 in a way that
would allow the CVE-2011-1944, CVE-2010-4008, and CVE-2011-2834 flaws to be
exploited; however, third-party applications may allow XPath expressions to
be passed which could trigger these flaws.
Red Hat would like to thank the Google Security Team for reporting the
CVE-2010-4008 issue. Upstream acknowledges Bui Quang Minh from Bkis as the
original reporter of CVE-2010-4008.
All users of libxml2 are advised to upgrade to these updated packages,
which contain backported patches to correct these issues. The desktop must
be restarted (log out, then log back in) for this update to take effect.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "Updated libxml2 packages that fix several security issues are now available\nfor Red Hat Enterprise Linux 5.\n\nThe Red Hat Security Response Team has rated this update as having\nimportant security impact. Common Vulnerability Scoring System (CVSS) base\nscores, which give detailed severity ratings, are available for each\nvulnerability from the CVE links in the References section.", "title": "Topic" }, { "category": "general", "text": "The libxml2 library is a development toolbox providing the implementation\nof various XML standards. One of those standards is the XML Path Language\n(XPath), which is a language for addressing parts of an XML document.\n\nA heap-based buffer overflow flaw was found in the way libxml2 decoded\nentity references with long names. A remote attacker could provide a\nspecially-crafted XML file that, when opened in an application linked\nagainst libxml2, would cause the application to crash or, potentially,\nexecute arbitrary code with the privileges of the user running the\napplication. (CVE-2011-3919)\n\nAn off-by-one error, leading to a heap-based buffer overflow, was found in\nthe way libxml2 parsed certain XML files. A remote attacker could provide a\nspecially-crafted XML file that, when opened in an application linked\nagainst libxml2, would cause the application to crash or, potentially,\nexecute arbitrary code with the privileges of the user running the\napplication. (CVE-2011-0216)\n\nAn integer overflow flaw, leading to a heap-based buffer overflow, was\nfound in the way libxml2 parsed certain XPath expressions. If an attacker\nwere able to supply a specially-crafted XML file to an application using\nlibxml2, as well as an XPath expression for that application to run against\nthe crafted file, it could cause the application to crash or, possibly,\nexecute arbitrary code. (CVE-2011-1944)\n\nFlaws were found in the way libxml2 parsed certain XPath expressions. If an\nattacker were able to supply a specially-crafted XML file to an application\nusing libxml2, as well as an XPath expression for that application to run\nagainst the crafted file, it could cause the application to crash.\n(CVE-2010-4008, CVE-2011-2834)\n\nAn out-of-bounds memory read flaw was found in libxml2. A remote attacker\ncould provide a specially-crafted XML file that, when opened in an\napplication linked against libxml2, would cause the application to crash.\n(CVE-2011-3905)\n\nNote: Red Hat does not ship any applications that use libxml2 in a way that\nwould allow the CVE-2011-1944, CVE-2010-4008, and CVE-2011-2834 flaws to be\nexploited; however, third-party applications may allow XPath expressions to\nbe passed which could trigger these flaws.\n\nRed Hat would like to thank the Google Security Team for reporting the\nCVE-2010-4008 issue. Upstream acknowledges Bui Quang Minh from Bkis as the\noriginal reporter of CVE-2010-4008.\n\nAll users of libxml2 are advised to upgrade to these updated packages,\nwhich contain backported patches to correct these issues. The desktop must\nbe restarted (log out, then log back in) for this update to take effect.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2012:0017", "url": "https://access.redhat.com/errata/RHSA-2012:0017" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "645341", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=645341" }, { "category": "external", "summary": "709747", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=709747" }, { "category": "external", "summary": "724906", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=724906" }, { "category": "external", "summary": "735751", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=735751" }, { "category": "external", "summary": "767387", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=767387" }, { "category": "external", "summary": "771896", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=771896" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2012/rhsa-2012_0017.json" } ], "title": "Red Hat Security Advisory: libxml2 security update", "tracking": { "current_release_date": "2024-11-22T06:04:06+00:00", "generator": { "date": "2024-11-22T06:04:06+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.2.1" } }, "id": "RHSA-2012:0017", "initial_release_date": "2012-01-11T17:43:00+00:00", "revision_history": [ { "date": "2012-01-11T17:43:00+00:00", "number": "1", "summary": "Initial version" }, { "date": "2012-01-11T17:45:39+00:00", "number": "2", "summary": "Last updated version" }, { "date": "2024-11-22T06:04:06+00:00", "number": "3", "summary": "Last generated version" } ], "status": "final", "version": "3" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "Red Hat Enterprise Linux Desktop (v. 5 client)", "product": { "name": "Red Hat Enterprise Linux Desktop (v. 5 client)", "product_id": "5Client-5.7.Z", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:5::client" } } }, { "category": "product_name", "name": "RHEL Desktop Workstation (v. 5 client)", "product": { "name": "RHEL Desktop Workstation (v. 5 client)", "product_id": "5Client-Workstation-5.7.Z", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:5::client_workstation" } } }, { "category": "product_name", "name": "Red Hat 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"2010-10-18T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "645341" } ], "notes": [ { "category": "description", "text": "libxml2 before 2.7.8, as used in Google Chrome before 7.0.517.44, Apple Safari 5.0.2 and earlier, and other products, reads from invalid memory locations during processing of malformed XPath expressions, which allows context-dependent attackers to cause a denial of service (application crash) via a crafted XML document.", "title": "Vulnerability description" }, { "category": "summary", "text": "libxml2: Crash (stack frame overflow or NULL pointer dereference) by traversal of XPath axis", "title": "Vulnerability summary" }, { "category": "other", "text": "This issue did not affect the versions of libxml and libxml2 as shipped with Red Hat Enterprise Linux 3, and it did not affect the version of libxml2 as shipped with Red Hat Enterprise Linux 4.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ia64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390x", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.src", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.x86_64", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.ia64", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.ppc", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.ppc64", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.s390", 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"category": "summary", "text": "libxml2: Off-by-one error leading to heap-based buffer overflow in encoding", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ia64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390x", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.src", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.x86_64", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.i386", 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buffer overflow when adding a new namespace node, related to handling of XPath expressions.", "title": "Vulnerability description" }, { "category": "summary", "text": "libxml2: Heap-based buffer overflow by adding new namespace node to an existing nodeset or merging nodesets", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ia64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390x", 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"url": "https://access.redhat.com/security/cve/CVE-2011-1944" }, { "category": "external", "summary": "RHBZ#709747", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=709747" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2011-1944", "url": "https://www.cve.org/CVERecord?id=CVE-2011-1944" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1944", "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1944" } ], "release_date": "2011-05-27T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2012-01-11T17:43:00+00:00", "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. 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double-free caused by malformed XPath expression in XSLT", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ia64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390x", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.src", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.x86_64", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.ia64", 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"category": "other", "text": "This issue affects the version of libxml2 as shipped with Red Hat Enterprise\nLinux 4, 5 and 6 and has been addressed via RHSA-2012:0016, RHSA-2012:0017 and\nRHSA-2012:0018 respectively. This issue affects the version of mingw32-libxml2\nas shipped with Red Hat Enterprise Linux 6. The Red Hat Security Response Team\nhas rated this issue as having low security impact. A future update may address\nthis issue in Red Hat Enterprise Linux 6.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ia64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390x", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.src", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.x86_64", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-debuginfo-0:2.6.26-2.1.12.el5_7.2.ia64", 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entity reference with a long name", "title": "Vulnerability summary" }, { "category": "other", "text": "This issue affected the versions of libxml2 as shipped with Red Hat Enterprise Linux 4, 5 and 6 and has been addressed via RHSA-2012:0016, RHSA-2012:0017 and RHSA-2012:0018 respectively.", "title": "Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.i386", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ia64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.ppc64", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390", "5Client-5.7.Z:libxml2-0:2.6.26-2.1.12.el5_7.2.s390x", 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"url": "https://access.redhat.com/security/cve/CVE-2011-3919" }, { "category": "external", "summary": "RHBZ#771896", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=771896" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2011-3919", "url": "https://www.cve.org/CVERecord?id=CVE-2011-3919" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-3919", "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-3919" } ], "release_date": "2012-01-06T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2012-01-11T17:43:00+00:00", "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. 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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.