Vulnerability Monitor

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CVE-2011-0020

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.

Security Impact Summary

CVE-2011-0020 is a security vulnerability that . Impacting 2 products from gnome, from pango organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-01-24T18:00:03.783

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.6 (HIGH)

CVSSv2 Vector

AV:N/AC:H/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: HIGH
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

4.9

Impact Score

10.0

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnome	pango	≤ 1.28.3	Yes
Application	gnome	pango	1.28.0	Yes
Application	gnome	pango	1.28.1	Yes
Application	gnome	pango	1.28.2	Yes
Application	pango	pango	0.20	Yes
Application	pango	pango	0.21	Yes
Application	pango	pango	0.22	Yes
Application	pango	pango	0.23	Yes
Application	pango	pango	0.24	Yes
Application	pango	pango	0.25	Yes
Application	pango	pango	0.26	Yes
Application	pango	pango	1.0	Yes
Application	pango	pango	1.1	Yes
Application	pango	pango	1.2	Yes
Application	pango	pango	1.3	Yes
Application	pango	pango	1.4	Yes
Application	pango	pango	1.5	Yes
Application	pango	pango	1.6	Yes
Application	pango	pango	1.7	Yes
Application	pango	pango	1.8	Yes
Application	pango	pango	1.9	Yes
Application	pango	pango	1.10	Yes
Application	pango	pango	1.11	Yes
Application	pango	pango	1.12	Yes
Application	pango	pango	1.13	Yes
Application	pango	pango	1.14	Yes
Application	pango	pango	1.15	Yes
Application	pango	pango	1.16	Yes
Application	pango	pango	1.17	Yes
Application	pango	pango	1.18	Yes
Application	pango	pango	1.19	Yes
Application	pango	pango	1.20	Yes
Application	pango	pango	1.21	Yes
Application	pango	pango	1.22	Yes
Application	pango	pango	1.23	Yes
Application	pango	pango	1.24	Yes
Application	pango	pango	1.25	Yes
Application	pango	pango	1.26	Yes
Application	pango	pango	1.27	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html ([email protected])
http://openwall.com/lists/oss-security/2011/01/18/6 Exploit ([email protected])
http://openwall.com/lists/oss-security/2011/01/20/2 Exploit ([email protected])
http://osvdb.org/70596 ([email protected])
http://secunia.com/advisories/42934 ([email protected])
http://secunia.com/advisories/43100 ([email protected])
http://www.redhat.com/support/errata/RHSA-2011-0180.html ([email protected])
http://www.securityfocus.com/bid/45842 ([email protected])
http://www.securitytracker.com/id?1024994 ([email protected])
http://www.vupen.com/english/advisories/2011/0186 Vendor Advisory ([email protected])
http://www.vupen.com/english/advisories/2011/0238 ([email protected])
https://bugs.launchpad.net/ubuntu/+source/pango1.0/+bug/696616 Exploit ([email protected])
https://bugzilla.gnome.org/show_bug.cgi?id=639882 ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=671122 Exploit ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/64832 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html (af854a3a-2127-422b-91ae-364da2661108)
http://openwall.com/lists/oss-security/2011/01/18/6 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://openwall.com/lists/oss-security/2011/01/20/2 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://osvdb.org/70596 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/42934 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/43100 (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2011-0180.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/45842 (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id?1024994 (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2011/0186 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2011/0238 (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.launchpad.net/ubuntu/+source/pango1.0/+bug/696616 Exploit (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.gnome.org/show_bug.cgi?id=639882 (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=671122 Exploit (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/64832 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For gnome's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.