Description
The xmlParserHandlePEReference function in parser.c in libxml2 before 2.9.2, as used in Web Listener in Oracle HTTP Server in Oracle Fusion Middleware 11.1.1.7.0, 12.1.2.0, and 12.1.3.0 and other products, loads external parameter entities regardless of whether entity substitution or validation is enabled, which allows remote attackers to cause a denial of service (resource consumption) via a crafted XML document.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libxml2 | 2.9.1+dfsg1-4 | — |
| Debian 13 | libxml2 | 2.9.1+dfsg1-4 | — |
| Debian 12 | libxml2 | 2.9.1+dfsg1-4 | — |
| Debian 7 | libxml2 | 2.8.0+dfsg1-7+wheezy3 | DSA-2978-2 |
| Debian 6.0 | libxml2 | 2.7.8.dfsg-2+squeeze11 | DLA-151-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | libxml2 | 2.9.1+dfsg1-3ubuntu4.1 | USN-2214-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | libxml2 +3 | 2.9.1-5.ael7b_1.2 | RHSA-2015:0749 |
| RHEL 6 | libxml2 +3 | 2.7.6-14.el6_5.1 | RHSA-2014:0513 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | libxml2 +1 | 2.9.1-26.12.1 | SUSE-SU-2017:1366-1 |
| SLES 11 SP4 | libxml2 | 2.7.6-0.47.1 | SUSE-SU-2021:14729-1, SUSE-RU-2016:2413-1 |
| SLES 11 SP4 | libxml2-python | 2.7.6-0.47.3 | SUSE-SU-2021:14729-1, SUSE-RU-2016:2413-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | libxml2 +1 | 2.9.1-26.12.1 | SUSE-SU-2017:1366-1 |
| SLES for SAP 11 SP4 | libxml2 | 2.7.6-0.47.1 | SUSE-RU-2016:2413-1 |
| SLES for SAP 11 SP4 | libxml2-python | 2.7.6-0.47.3 | SUSE-RU-2016:2413-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | libxml2 +1 | 2.7.6-0.77.36.1 | SUSE-SU-2021:14729-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libxml2 | 2.9.4-1.22 | openSUSE-SU-2024:10192-1 |
| openSUSE Tumbleweed | ruby3.2-rubygem-nokogiri | 1.13.9-1.7 | openSUSE-SU-2024:13165-1 |
| openSUSE Tumbleweed | rubygem-nokogiri | 1.6.8.1-1.3 | openSUSE-SU-2026:10356-1, openSUSE-SU-2025:14697-1, openSUSE-SU-2024:14174-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | libxml2 +3 | 2.9.1-5.0.1.el7_1.2 | ELSA-2015-0749 |
Advisories 17
- RHSA-2014:0513 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- RHSA-2015:0749 Red Hat Security Advisory: libxml2 security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2214-1 libxml2 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2026:10356-1 ruby4.0-rubygem-nokogiri-1.18.9-1.4 on GA media SUSE / openSUSE Security Updates · Mar 14, 2026
- DSA-2978-2 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-151-1 libxml2 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2025:14697-1 ruby3.4-rubygem-nokogiri-1.18.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10192-1 libxml2-2-2.9.4-1.22 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:14729-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10549-1 ruby2.2-rubygem-nokogiri-1.6.8.1-1.3 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13165-1 ruby3.2-rubygem-nokogiri-1.13.9-1.7 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14174-1 ruby3.3-rubygem-nokogiri-1.15.5-1.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11912-1 ruby3.1-rubygem-nokogiri-1.13.3-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1366-1 Security update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-RU-2016:2413-1 Recommended update for libxml2 SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2025-0620 libxml2: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Mar 20, 2025
- ELSA-2015-0749 Moderate: libxml2 security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 30, 2015
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1090976
- https://support.apple.com/kb/HT205030
- 67233 vdb-entry
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html
- http://xmlsoft.org/news.html
- RHSA-2015:0749 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
- https://git.gnome.org/browse/libxml2/commit/?id=9cd1c3cfbd32655d60572c0a413e017260c854df
- libxml2-cve20140191-dos(93092) vdb-entry
- http://www-01.ibm.com/support/docview.wss?uid=swg21678183
- APPLE-SA-2015-08-13-2 vendor-advisory
- APPLE-SA-2015-08-13-3 vendor-advisory
- openSUSE-SU-2015:2372 vendor-advisory
- https://support.apple.com/kb/HT205031