81956 : HarfBuzz tibetan_form Macro Tibetan Handling Out-of-bounds Read Issue
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	491	about 1 year ago	13 days ago	6 times	100%

Timeline

Disclosure Date
2012-05-15

Time to Patch
37 days

Description

HarfBuzz contains an out-of-bounds read flaw in the 'tibetan_form' macro in harfbuzz-tibetan.c. With a specially crafted web page, a context-dependent attacker can cause a crash and potentially disclose memory contents.

Classification

Location: Context Dependent
Attack Type: Input Manipulation
Impact: Loss of Confidentiality, Loss of Availability
Solution: Third-Party Solution, Solution Unknown
Exploit: PoC Public
Disclosure: Third-party Verified
OSVDB: Web Related

Solution

Upgrade to Google Chrome version 19.0.1084.46 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Google, Inc.

Chrome

18.0.1025.168

Freedesktop.org

HarfBuzz

Unspecified

References

Security Tracker: 1027067
OVAL ID: 15233
CVE ID: 2011-3094 (see also: NVD)
Secunia Advisory ID: 49194 49240 49278 49420
Bugtraq ID: 53540
Related OSVDB ID: 81945 81946 81947 81948 81949 81950 81951 81952 81953 81954 81955 81957 81958 81959 81960 81961 81962 81963 81964
Vendor Specific News/Changelog Entry: http://code.google.com/p/chromium/issues/detail?id=122586
http://googlechromereleases.blogspot.com/2012/05/stable-channel-update.html
http://lists.opensuse.org/opensuse-updates/2012-05/msg00040.html
http://www.gentoo.org/security/en/glsa/glsa-201205-03.xml
http://www.srware.net/forum/viewtopic.php?f=18&t=3729
Vendor Specific Solution URL: http://src.chromium.org/viewvc/chrome?revision=131694&view=revision

Credit

miaubiz

CVSSv2 Score

CVSSv2 Base Score = 5.0
Source: nvd.nist.gov | Generated: 2012-05-16 | Disagree? | There are 1 more: View All

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