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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)…
High9.3EPSS 8.4%
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Timeline
ID reserved
By redhat
- 23 days later
· 23 days later
Published
- 13 years later
· 13 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High9.3 | AV:N/AC:M/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 8.4% · top 5.0% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 9.3.
Weakness
Affected products
n/a
- affected n/a
References (38)
- https://support.apple.com/HT205635 (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2011:1154 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- USN-1191-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [oss-security] 20110810 LZW decompression issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=725760 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 45544 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://support.apple.com/HT205637 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://support.apple.com/kb/HT5130 (opens in a new tab)x_refsource_CONFIRMx_transferred
- APPLE-SA-2015-12-08-4 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- MDVSA-2011:153 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 49124 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 45599 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2011:1155 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 1025920 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- openSUSE-SU-2011:1299 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- APPLE-SA-2015-12-08-3 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- SUSE-SU-2011:1035 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- APPLE-SA-2012-02-01-1 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- [xorg-announce] 20110810 X.Org security advisory: libXfont LZW decompression heap corruption (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 46127 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 45986 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- RHSA-2011:1161 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2011:1834 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://www.openbsd.org/cgi-bin/cvsweb/src/usr.bin/compress/zopen.c#rev1.17 (opens in a new tab)x_refsource_CONFIRMx_transferred
- xorg-lzw-bo(69141) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- APPLE-SA-2015-12-08-1 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- 45568 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [xorg-announce] 20110810 [ANNOUNCE] libXfont 1.4.4 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://support.apple.com/HT205641 (opens in a new tab)x_refsource_CONFIRMx_transferred
- NetBSD-SA2011-007 (opens in a new tab)vendor-advisoryx_refsource_NETBSDx_transferred
- https://support.apple.com/HT205640 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=d11ee5886e9d9ec610051a206b135a4cdc1e09a0 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 48951 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- APPLE-SA-2015-12-08-2 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- http://support.apple.com/kb/HT5281 (opens in a new tab)x_refsource_CONFIRMx_transferred
- APPLE-SA-2012-05-09-1 (opens in a new tab)vendor-advisoryx_refsource_APPLEx_transferred
- DSA-2293 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=727624 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2011-2895)Record last updated .