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Last updated: 7/30/2014 3:00:43 AM

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Vulnerability Summary for CVE-2011-0064

Original release date: 03/07/2011
Last revised: 02/11/2014
Source: US-CERT/NIST

Overview

The hb_buffer_ensure function in hb-buffer.c in HarfBuzz, as used in Pango 1.28.3, Firefox, and other products, does not verify that memory reallocations succeed, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly execute arbitrary code via crafted OpenType font data that triggers use of an incorrect index.

Description

Per: http://cwe.mitre.org/data/definitions/476.html 'CWE-476: NULL Pointer Dereference'

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.8 (MEDIUM) (AV:N/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

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External Source: BID
Name: 46632
External Source: CONFIRM
Name: https://bugzilla.mozilla.org/show_bug.cgi?id=606997
External Source: MANDRIVA
Name: MDVSA-2011:040
External Source: VUPEN
Name: ADV-2011-0683
External Source: CONFIRM
Name: https://build.opensuse.org/request/show/63070
Type: Patch Information
External Source: VUPEN
Name: ADV-2011-0543
Type: Advisory
External Source: SECUNIA
Name: 43572
Type: Advisory
External Source: VUPEN
Name: ADV-2011-0584
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=678563
Type: Patch Information
External Source: SECUNIA
Name: 43800
External Source: CONFIRM
Name: http://cgit.freedesktop.org/harfbuzz/commit/?id=a6a79df5fe2ed2cd307e7a991346faee164e70d9
Type: Patch Information
External Source: XF
Name: pango-hbbufferensure-bo(65770)
External Source: SECUNIA
Name: 43578
Type: Advisory
External Source: SUSE
Name: SUSE-SR:2011:005
External Source: DEBIAN
Name: DSA-2178
External Source: VUPEN
Name: ADV-2011-0558
Type: Advisory
External Source: SECTRACK
Name: 1025145
External Source: FEDORA
Name: FEDORA-2011-3194
External Source: UBUNTU
Name: USN-1082-1
External Source: REDHAT
Name: RHSA-2011:0309
External Source: VUPEN
Name: ADV-2011-0555
Type: Advisory
External Source: SECUNIA
Name: 43559
Type: Advisory
External Source: CONFIRM
Name: https://bugzilla.novell.com/show_bug.cgi?id=672502

Technical Details

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