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Vulnerability Details : CVE-2011-0064

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.
Publish Date : 2011-03-07 Last Update Date : 2017-08-16
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceExecute Code
CWE ID CWE id is not defined for this vulnerability

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat critical
AV:N/AC:M/Au:N/C:P/I:P/A:P 2011-02-15 2011-03-01
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-0064 unix
DEPRECATED: ELSA-2011-0309 -- pango security update (critical) oval:org.mitre.oval:def:27988 unix
DSA-2178-1 pango1.0 -- NULL pointer dereference oval:org.mitre.oval:def:12975 unix
ELSA-2011:0309: pango security update (Critical) oval:org.mitre.oval:def:23405 unix
RHSA-2011:0309: pango security update (Critical) oval:org.mitre.oval:def:21584 unix
RHSA-2011:0309: pango security update (Critical) oval:com.redhat.rhsa:def:20110309 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-0064

# Product Type Vendor Product Version Update Edition Language
1 Application Mozilla Firefox Version Details Vulnerabilities
2 Application Pango Pango 1.28.3 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Mozilla Firefox 1
Pango Pango 1

- References For CVE-2011-0064
XF pango-hbbufferensure-bo(65770) CONFIRM CONFIRM CONFIRM CONFIRM
VUPEN ADV-2011-0584
VUPEN ADV-2011-0683
VUPEN ADV-2011-0558
VUPEN ADV-2011-0555
VUPEN ADV-2011-0543
BID 46632 Pango 'hb_buffer_ensure()' Buffer Overflow Vulnerability Release Date:2014-05-19
REDHAT RHSA-2011:0309
SECTRACK 1025145

- Metasploit Modules Related To CVE-2011-0064

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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