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Unscored Public exploit CVE-2009-2473 EUVD-2009-2468GHSA-9vc6-7j3x-7x4v

neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent attacker…

Published Aug 21, 2009 · Updated Aug 7, 2024 · Assigned by redhat

Description

neon before 0.28.6, when expat is used, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

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.

Red Hat

Security tracker ↗
ReleasePackageFixed inAdvisory
RHEL 5 gnome-vfs2 +2 2.16.2-10.el5 RHSA-2013:0131
RHEL 5 neon +1 0.25.5-10.el5_4.1 RHSA-2009:1452
RHEL 4 neon +1 0.24.7-4.el4_8.2 RHSA-2009:1452

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Exploit-DB 1

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 2

References