Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2011-2895

Severity CVSS v4.0:
Pending analysis
Type:
CWE-119 Buffer Errors
Publication date:
19/08/2011
Last modified:
11/04/2025

Description

The LZW decompressor in (1) the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and (2) compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products, does not properly handle code words that are absent from the decompression table when encountered, which allows context-dependent attackers to trigger an infinite loop or a heap-based buffer overflow, and possibly execute arbitrary code, via a crafted compressed stream, a related issue to CVE-2006-1168 and CVE-2011-2896.

Impact

Vector 2.0
AV:N/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 9.30 HIGH
Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
9.30
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:freetype:freetype:2.1.9:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:*:*:*:*:*:*:*:* 1.4.3 (including)
cpe:2.3:a:x:libxfont:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.1:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.2:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.3:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.4:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.5:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.6:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.7:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.8:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.2.9:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.3.1:*:*:*:*:*:*:*
cpe:2.3:a:x:libxfont:1.3.2:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools