79437 : Libxml2 Hash Collision Form Parameter Parsing Remote DoS
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Timeline

Disclosure Date
2012-02-22

Description

Libxml2 contains a flaw that may allow a remote denial of service. The issue is triggered when an attacker sends multiple crafted parameters which trigger hash collisions, and will result in loss of availability for the program via CPU consumption.

Classification

Location: Remote / Network Access
Impact: Loss of Availability
Solution: Patch / RCS
Exploit: Exploit Unknown
Disclosure: Vendor Verified
OSVDB: Web Related

Solution

Currently, there are no known workarounds or upgrades to correct this issue. However, Red Hat has released a patch to address this vulnerability. Check the Red Hat advisory in the references section. iOS users can upgrade to version 7 to resolve this issue. Apple TV users can upgrade to version 6, or higher, to address this issue.

Products

XMLSoft
Libxml2
2.7.8
Apple Inc.
iTunes
11.1
Apple TV
5.2.0
6.0 (not affected)
5.2.1
Apple iOS
6.1.4

References

Credit

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2012-12-21 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_0 Integrity_impact_0 Availability_impact_1

Comments

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