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CVE-2016-9597: libxml2 may crash, causing service outage

CVE-2016-9597 · published 8 years ago

Summary

The recent update for Red Hat JBoss Core Services did not actually fix a known flaw in the libxml2 library. Systems that use libxml2 – such as Ubuntu Linux, Debian Linux, and HP IceWall Federation Agent or File Manager – can still be forced to stop working if an attacker sends specially‑crafted data. Apply any newer patches from your vendor as soon as they are released and verify that the libxml2 fix is included.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
canonical	ubuntu_linux	12.04 14.04 15.10 16.04 `cpe:2.3:o:canonical:ubuntu_linux:12.04::::lts:::`
xmlsoft	libxml2	2.9.3 `cpe:2.3:a:xmlsoft:libxml2:2.9.3:::::::*`
debian	debian_linux	8.0 `cpe:2.3:o:debian:debian_linux:8.0:::::::*`
hp	icewall_federation_agent	3.0 `cpe:2.3:a:hp:icewall_federation_agent:3.0:::::::*`
hp	icewall_file_manager	3.0 `cpe:2.3:a:hp:icewall_file_manager:3.0:::::::*`
opensuse	leap	42.1 `cpe:2.3:o:opensuse:leap:42.1:::::::*`

Original advisory text

It was found that Red Hat JBoss Core Services erratum RHSA-2016:2957 for CVE-2016-3705 did not actually include the fix for the issue found in libxml2, making it vulnerable to a Denial of Service attack due to a Stack Overflow. This is a regression CVE for the same issue as CVE-2016-3705.

References

http://www.securityfocus.com/bid/98567 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9597 Issue Tracking

Fix within

Internet-facing 14 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker partial control (estimated)

Severity

7.5 High

Exploitation

4% chance of attack within 30 days

Type

CWE-674Uncontrolled Recursion

CWE-119Buffer Overflow

Timeline

Published30 Jul 2018

Updated24 Oct 2026

First seen29 Sep 2026

Sources

CVE-2016-9597 · NVD

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