MEDIUM
libxml2: hash table collisions CPU usage DoS
Published Dec 21, 2012
5.0
MEDIUMCVSS 2.0
EPSS 3.26%
Description
libxml2 before 2.8.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data.
Affected products
No data.
Configuration 1
OR
- ≤ 2.7.8
- 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
- 2.6.21
- 2.6.22
- 2.6.23
- 2.6.24
- 2.6.25
- 2.6.26
- 2.6.27
- 2.6.28
- 2.6.29
- 2.6.30
- 2.6.31
- 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
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_8.2
Fixed · RHSA-2012:0324
Red Hat Enterprise Linux 6
libxml2-0:2.7.6-4.el6_2.4
Fixed · RHSA-2012:0324
Red Hat Enterprise Linux 6
mingw32-libxml2-0:2.7.6-6.el6_3
Fixed · RHSA-2013:0217
Red Hat Enterprise Linux 4
libxml2
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | libxml2-0:2.6.26-2.1.15.el5_8.2 | Fixed | RHSA-2012:0324 |
| Red Hat Enterprise Linux 6 | libxml2-0:2.7.6-4.el6_2.4 | Fixed | RHSA-2012:0324 |
| Red Hat Enterprise Linux 6 | mingw32-libxml2-0:2.7.6-6.el6_3 | Fixed | RHSA-2013:0217 |
| Red Hat Enterprise Linux 4 | libxml2 | Affected | n/a |
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
3.26% 0.03260
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.03260
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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.26% (0.03260) | 87.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.17% (0.03167) | 86.30th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.41% (0.00414) | 58.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.33% (0.02328) | 74.69th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.59% (0.00586) | 67.20th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.91% (0.00908) | 83.47th | v3 (v2023.03.01) |
| Jan 14, 2024 | 0.91% (0.00908) | 81.00th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.87% (0.00866) | 79.82th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (24)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=660846 x_refsource_MISC
- http://git.gnome.org/browse/libxml2/commit/?id=8973d58b7498fa5100a876815476b81fd1a2412a 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/2013-11/msg00002.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2012-0324.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2013-0217.html vendor-advisoryx_refsource_REDHAT
- http://secunia.com/advisories/54886 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/55568 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1026723 vdb-entryx_refsource_SECTRACK
- 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-2417 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:150 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2012/02/22/1 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/52107 vdb-entryx_refsource_BIDPatch
- http://www.xerox.com/download/security/security-bulletin/16287-4d6b7b0c81f7b/cert_XRX13-003_v1.0.pdf x_refsource_CONFIRM
- http://xmlsoft.org/news.html x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2012-0841 Vendor Advisory
- https://blogs.oracle.com/sunsecurity/entry/cve_2012_0841_denial_of x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=787067 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-0841
- https://www.cve.org/CVERecord?id=CVE-2012-0841
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Dec 21, 2012
Updated Aug 6, 2024
Reserved Jan 19, 2012
Link CVE-2012-0841
CISA Vulnrichment
Updated n/a