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CVE-2011-2895

UnknownEPSS 8.36%

Last modified

CVE-2011-2895 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 8.36% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
8.36%

94.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FreetypeFreetype2.1.9
XLibxfont<= 1.4.3
XLibxfont1.2.0
XLibxfont1.2.1
XLibxfont1.2.2
XLibxfont1.2.3
XLibxfont1.2.4
XLibxfont1.2.5
XLibxfont1.2.6
XLibxfont1.2.7
XLibxfont1.2.8
XLibxfont1.2.9
XLibxfont1.3.0
XLibxfont1.3.1
XLibxfont1.3.2
XLibxfont1.3.3
XLibxfont1.3.4
XLibxfont1.4.0
XLibxfont1.4.1
XLibxfont1.4.2
FreebsdFreebsdAll versions
NetbsdNetbsdAll versions
OpenbsdOpenbsd<= 3.7
OpenbsdOpenbsd2.0
OpenbsdOpenbsd2.1
OpenbsdOpenbsd2.2
OpenbsdOpenbsd2.3
OpenbsdOpenbsd2.4
OpenbsdOpenbsd2.5
OpenbsdOpenbsd2.6
OpenbsdOpenbsd2.7
OpenbsdOpenbsd2.8
OpenbsdOpenbsd2.9
OpenbsdOpenbsd3.0
OpenbsdOpenbsd3.1
OpenbsdOpenbsd3.2
OpenbsdOpenbsd3.3
OpenbsdOpenbsd3.4
OpenbsdOpenbsd3.5
OpenbsdOpenbsd3.6

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-2895?
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.
How severe is CVE-2011-2895?
Severity scoring for CVE-2011-2895 is pending analysis. The EPSS model estimates a 8.36% probability of exploitation in the next 30 days.
How do I fix CVE-2011-2895?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST