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.
Key facts
- CVSS score
- 6.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P- EPSS score
- 3.3% (89th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-0090)
- Published
- March 7, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-0090 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- gnome / pango
- mozilla / firefox
References
- http://cgit.freedesktop.org/harfbuzz/commit/?id=a6a79df5fe2ed2cd307e7a991346faee164e70d9(Patch)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056065.html
- http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
- http://secunia.com/advisories/43559(Vendor Advisory)
- http://secunia.com/advisories/43572(Vendor Advisory)
- http://secunia.com/advisories/43578(Vendor Advisory)
- http://secunia.com/advisories/43800
- http://securitytracker.com/id?1025145
- http://www.debian.org/security/2011/dsa-2178
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:040
- http://www.redhat.com/support/errata/RHSA-2011-0309.html
- http://www.securityfocus.com/bid/46632
- http://www.ubuntu.com/usn/USN-1082-1
- http://www.vupen.com/english/advisories/2011/0543(Vendor Advisory)
- http://www.vupen.com/english/advisories/2011/0555(Vendor Advisory)
- http://www.vupen.com/english/advisories/2011/0558(Vendor Advisory)
- http://www.vupen.com/english/advisories/2011/0584
- http://www.vupen.com/english/advisories/2011/0683
- https://bugzilla.mozilla.org/show_bug.cgi?id=606997
- https://bugzilla.novell.com/show_bug.cgi?id=672502
- https://bugzilla.redhat.com/show_bug.cgi?id=678563(Patch)
- https://build.opensuse.org/request/show/63070(Patch)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65770
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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