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Fencer Intel
critical 9.8

CVE-2015-8710 json

The htmlParseComment function in HTMLparser.c in libxml2 allows attackers to obtain sensitive information, cause a denial of service (out-o…

published 10y ago modified 4mo ago also EUVD-2015-8587

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.9%
EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

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.

Patch / fix

  • xmlsoft libxml2 2.9.3
  • libxml2 Debian 14, Debian 13, Debian 12 2.9.2+really2.9.1+dfsg1-0.1

debian advisories DEBIAN-CVE-2015-8710

  • libxml2 Ubuntu 14.04 LTS 2.9.1+dfsg1-3ubuntu4.7

ubuntu advisories UBUNTU-CVE-2015-8710

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libxml2 RHEL 7 2.9.1-6.el7_2.2
  • libxml2-python RHEL 7 2.9.1-6.el7_2.2
  • libxml2 RHEL 6 2.7.6-20.el6_7.1
  • libxml2-python RHEL 6 2.7.6-20.el6_7.1

red hat advisories RHSA-2015:2550RHSA-2015:2549

  • libxml2 SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +6 more 2.7.6-0.37.1
  • libxml2-python SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +4 more 2.7.6-0.37.4
  • libxml2 SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 2.9.1-17.1
  • python-libxml2 SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +3 more 2.9.1-17.1

suse advisories SUSE-SU-2016:0187-1SUSE-SU-2016:0178-1

Is CVE-2015-8710 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-8710 updated cvss 5.8

libxml2: out-of-bounds memory access when parsing an unclosed HTML comment

  • Red Hat Enterprise Linux 5 libxml2 Red Hat JBoss Enterprise Web Server 2 libxml2
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2 Red Hat Enterprise Linux Client Optional (v. 7) libxml2-devel 2.9.1-6.el7_2.2, libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2 Red Hat Enterprise Linux ComputeNode (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2 Red Hat Enterprise Linux ComputeNode Optional (v. 7) libxml2-devel 2.9.1-6.el7_2.2, libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
  • Red Hat Enterprise Linux Desktop (v. 6) libxml2 2.7.6-20.el6_7.1, libxml2-python 2.7.6-20.el6_7.1 Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2-devel 2.7.6-20.el6_7.1, libxml2-static 2.7.6-20.el6_7.1, libxml2-debuginfo 2.7.6-20.el6_7.1 Red Hat Enterprise Linux HPC Node (v. 6) libxml2 2.7.6-20.el6_7.1, libxml2-python 2.7.6-20.el6_7.1 Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2-devel 2.7.6-20.el6_7.1, libxml2-static 2.7.6-20.el6_7.1, libxml2-debuginfo 2.7.6-20.el6_7.1 Red Hat Enterprise Linux Server (v. 6) libxml2 2.7.6-20.el6_7.1, libxml2-python 2.7.6-20.el6_7.1
    fixed: vendor fix RHSA-2015:2549
  • Red Hat Enterprise Linux Server (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
  • Red Hat Enterprise Linux Server Optional (v. 6) libxml2-static 2.7.6-20.el6_7.1, libxml2-debuginfo 2.7.6-20.el6_7.1
    fixed: vendor fix RHSA-2015:2549
  • Red Hat Enterprise Linux Server Optional (v. 7) libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
  • Red Hat Enterprise Linux Workstation (v. 6) libxml2 2.7.6-20.el6_7.1, libxml2-python 2.7.6-20.el6_7.1
    fixed: vendor fix RHSA-2015:2549
  • Red Hat Enterprise Linux Workstation (v. 7) libxml2 2.9.1-6.el7_2.2, libxml2-python 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
show 3 more
  • Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2-static 2.7.6-20.el6_7.1, libxml2-debuginfo 2.7.6-20.el6_7.1
    fixed: vendor fix RHSA-2015:2549
  • Red Hat Enterprise Linux Workstation Optional (v. 7) libxml2-static 2.9.1-6.el7_2.2, libxml2-debuginfo 2.9.1-6.el7_2.2
    fixed: vendor fix RHSA-2015:2550
  • Red Hat JBoss Web Server 3.0
    fixed: vendor fix RHSA-2016:1089

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.93% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.