CVE-2011-0020 — Heap-based buffer overflow in the pango_ft2_font_render_box_glyph function in pa

Heap-based buffer overflow in the pango_ft2_font_render_box_glyph function in pango/pangoft2-render.c in libpango in Pango 1.28.3 and earlier, when the FreeType2 backend is enabled, allows user-assisted remote attackers to cause a denial of service (application crash) or possibly

01What is this vulnerability?

Heap-based buffer overflow in the pango_ft2_font_render_box_glyph function in pango/pangoft2-render.c in libpango in Pango 1.28.3 and earlier, when the FreeType2 backend is enabled, allows user-assisted remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted font file, related to the glyph box for an FT_Bitmap object.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2011-01-24T17:00:00.000Z
• Last modified: 2024-08-06T21:43:14.022Z

09References

• bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=671122
• bugzilla.gnome.org — https://bugzilla.gnome.org/show_bug.cgi?id=639882
• bugs.launchpad.net — https://bugs.launchpad.net/ubuntu/+source/pango1.0/+bug/696616
• www.securitytracker.com — http://www.securitytracker.com/id?1024994
• exchange.xforce.ibmcloud.com — https://exchange.xforce.ibmcloud.com/vulnerabilities/64832
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html
• openwall.com — http://openwall.com/lists/oss-security/2011/01/18/6
• osvdb.org — http://osvdb.org/70596
• secunia.com — http://secunia.com/advisories/43100
• www.redhat.com — http://www.redhat.com/support/errata/RHSA-2011-0180.html
• openwall.com — http://openwall.com/lists/oss-security/2011/01/20/2
• www.vupen.com — http://www.vupen.com/english/advisories/2011/0186
• secunia.com — http://secunia.com/advisories/42934
• www.securityfocus.com — http://www.securityfocus.com/bid/45842
• www.vupen.com — http://www.vupen.com/english/advisories/2011/0238