MEDIUM
libxml2: Heap-buffer-underflow in xmlParseAttValueComplex
Published Nov 28, 2012
6.8
MEDIUMCVSS 2.0
EPSS 4.38%
Description
Heap-based buffer underflow in the xmlParseAttValueComplex function in parser.c in libxml2 2.9.0 and earlier, as used in Google Chrome before 23.0.1271.91 and other products, allows remote attackers to cause a denial of service or possibly execute arbitrary code via crafted entities in an XML document.
Affected products
No data.
Configuration 1
OR
- ≤ 23.0.1271.89
- 23.0.1271.0
- 23.0.1271.1
- 23.0.1271.2
- 23.0.1271.3
- 23.0.1271.4
- 23.0.1271.5
- 23.0.1271.6
- 23.0.1271.7
- 23.0.1271.8
- 23.0.1271.10
- 23.0.1271.11
- 23.0.1271.12
- 23.0.1271.13
- 23.0.1271.14
- 23.0.1271.15
- 23.0.1271.16
- 23.0.1271.17
- 23.0.1271.18
- 23.0.1271.19
- 23.0.1271.20
- 23.0.1271.21
- 23.0.1271.22
- 23.0.1271.23
- 23.0.1271.24
- 23.0.1271.26
- 23.0.1271.30
- 23.0.1271.31
- 23.0.1271.32
- 23.0.1271.33
- 23.0.1271.35
- 23.0.1271.36
- 23.0.1271.37
- 23.0.1271.38
- 23.0.1271.39
- 23.0.1271.40
- 23.0.1271.41
- 23.0.1271.44
- 23.0.1271.45
- 23.0.1271.46
- 23.0.1271.49
- 23.0.1271.50
- 23.0.1271.51
- 23.0.1271.52
- 23.0.1271.53
- 23.0.1271.54
- 23.0.1271.55
- 23.0.1271.56
- 23.0.1271.57
- 23.0.1271.58
- 23.0.1271.60
- 23.0.1271.61
- 23.0.1271.62
- 23.0.1271.64
- 23.0.1271.83
- 23.0.1271.84
- 23.0.1271.85
- 23.0.1271.86
- 23.0.1271.87
- 23.0.1271.88
- ≤ 2.9.0
- 1.7.0
- 1.7.1
- 1.7.2
- 1.7.3
- 1.7.4
- 1.8.0
- 1.8.1
- 1.8.2
- 1.8.3
- 1.8.4
- 1.8.5
- 1.8.6
- 1.8.7
- 1.8.9
- 1.8.10
- 1.8.13
- 1.8.14
- 1.8.16
- 2.0.0
- 2.1.0
- 2.1.1
- 2.2.0
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
- 2.2.5
- 2.2.6
- 2.2.7
- 2.2.8
- 2.2.9
- 2.2.10
- 2.2.11
- 2.3.0
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.3.6
- 2.3.7
- 2.3.8
- 2.3.9
- 2.3.10
- 2.3.11
- 2.3.12
- 2.3.13
- 2.3.14
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.4.5
- 2.4.6
- 2.4.7
- 2.4.8
- 2.4.9
- 2.4.10
- 2.4.11
- 2.4.12
- 2.4.13
- 2.4.14
- 2.4.15
- 2.4.16
- 2.4.17
- 2.4.18
- 2.4.19
- 2.4.20
- 2.4.21
- 2.4.22
- 2.4.23
- 2.4.24
- 2.4.25
- 2.4.26
- 2.4.27
- 2.4.28
- 2.4.29
- 2.4.30
- 2.5.0
- 2.5.4
- 2.5.7
- 2.5.8
- 2.5.10
- 2.5.11
- 2.6.0
- 2.6.1
- 2.6.2
- 2.6.3
- 2.6.4
- 2.6.5
- 2.6.6
- 2.6.7
- 2.6.8
- 2.6.9
- 2.6.11
- 2.6.12
- 2.6.13
- 2.6.14
- 2.6.16
- 2.6.17
- 2.6.18
- 2.6.20
- 2.6.22
- 2.6.26
- 2.6.27
- 2.6.30
- 2.6.32
- 2.7.0
- 2.7.1
- 2.7.2
- 2.7.3
- 2.7.4
- 2.7.5
- 2.7.6
- 2.7.7
- 2.9.0
Configuration 2
OR
- ≤ 6.1.4
- 1.0.0
- 1.0.1
- 1.0.2
- 1.1.0
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.5
- 2.0
- 2.0.0
- 2.0.1
- 2.0.2
- 2.1
- 2.1.1
- 2.2
- 2.2.1
- 3.0
- 3.0.1
- 3.1
- 3.1.2
- 3.1.3
- 3.2
- 3.2.1
- 3.2.2
- 4.0
- 4.0.1
- 4.0.2
- 4.1
- 4.2.1
- 4.2.5
- 4.2.8
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.5
- 5.0
- 5.0.1
- 5.1
- 5.1.1
- 6.0
- 6.0.1
- 6.0.2
- 6.1
- 6.1.2
- 6.1.3
No data.
Red Hat Enterprise Linux 5
libxml2-0:2.6.26-2.1.15.el5_8.6
Fixed · RHSA-2012:1512
Red Hat Enterprise Linux 6
libxml2-0:2.7.6-8.el6_3.4
Fixed · RHSA-2012:1512
Red Hat Enterprise Linux 6
mingw32-libxml2-0:2.7.6-6.el6_3
Fixed · RHSA-2013:0217
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libxml2-0:2.6.26-2.1.15.el5_8.6 | Fixed | RHSA-2012:1512 |
| Red Hat Enterprise Linux 6 | libxml2-0:2.7.6-8.el6_3.4 | Fixed | RHSA-2012:1512 |
| Red Hat Enterprise Linux 6 | mingw32-libxml2-0:2.7.6-6.el6_3 | Fixed | RHSA-2013:0217 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
4.38% 0.04382
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04382
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.38% (0.04382) | 90.99th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.38% (0.04382) | 90.00th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.04% (0.02038) | 82.22th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.25% (0.05247) | 82.92th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.04% (0.02038) | 82.62th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.49% (0.04494) | 92.77th | v3 (v2023.03.01) |
| Jun 28, 2024 | 4.38% (0.04385) | 92.44th | v3 (v2023.03.01) |
| Apr 25, 2024 | 4.96% (0.04964) | 92.73th | v3 (v2023.03.01) |
| Feb 22, 2024 | 5.21% (0.05214) | 92.75th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.05% (0.04049) | 90.73th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.15% (0.06154) | 90.67th | v2 (v2022.01.01) |
| Aug 8, 2022 | 6.15% (0.06154) | 90.19th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.01% (0.05008) | 88.48th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.01% (0.05008) | 75.00th | v2 (v2022.01.01) |
Weaknesses (1)
References (25)
- http://git.gnome.org/browse/libxml2/commit/?id=6a36fbe3b3e001a8a840b5c1fdd81cefc9947f0d x_refsource_CONFIRM
- http://googlechromereleases.blogspot.com/2012/11/stable-channel-update.html x_refsource_CONFIRM
- http://lists.apple.com/archives/security-announce/2013/Oct/msg00009.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html vendor-advisoryx_refsource_APPLE
- http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00004.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00023.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2012-1512.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0217.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/51448 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/54886 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/55568 third-party-advisoryx_refsource_SECUNIA
- http://support.apple.com/kb/HT5934 x_refsource_CONFIRM
- http://support.apple.com/kb/HT6001 x_refsource_CONFIRM
- http://www.debian.org/security/2012/dsa-2580 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:056 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/56684 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1027815 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-1656-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-5134 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=880466 x_refsource_CONFIRMIssue Tracking
- https://code.google.com/p/chromium/issues/detail?id=158249 x_refsource_CONFIRM
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80294 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2012-5134
- https://www.cve.org/CVERecord?id=CVE-2012-5134
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner Chrome
Published Nov 28, 2012
Updated Aug 6, 2024
Reserved Sep 24, 2012
Link CVE-2012-5134
CISA Vulnrichment
Updated n/a