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Gentoo Linux Security Advisory GLSA 200410-08 |
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http://security.gentoo.org/ |
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|
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Severity: Normal |
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Title: ncompress: Buffer overflow |
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Date: October 09, 2004 |
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Bugs: #66251 |
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ID: 200410-08 |
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Synopsis |
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======== |
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|
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compress and uncompress, which could be used by daemon programs, |
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contain a buffer overflow that could lead to remote execution of |
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arbitrary code with the rights of the daemon process. |
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|
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Background |
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========== |
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|
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ncompress is a utility handling compression and decompression of |
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Lempel-Ziv archives, compatible with the original *nix compress and |
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uncompress utilities (.Z extensions). |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 app-arch/ncompress <= 4.2.4 >= 4.2.4-r1 |
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|
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Description |
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=========== |
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|
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compress and uncompress do not properly check bounds on command line |
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options, including the filename. Large parameters would trigger a |
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buffer overflow. |
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|
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Impact |
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====== |
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|
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By supplying a carefully crafted filename or other option, an attacker |
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could execute arbitrary code on the system. A local attacker could only |
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execute code with his own rights, but since compress and uncompress are |
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called by various daemon programs, this might also allow a remote |
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attacker to execute code with the rights of the daemon making use of |
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ncompress. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All ncompress users should upgrade to the latest version: |
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# emerge sync |
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# emerge -pv ">=app-arch/ncompress-4.2.4-r1" |
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# emerge ">=app-arch/ncompress-4.2.4-r1" |
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|
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References |
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========== |
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[ 1 ] US-CERT Vulnerability Note VU#176363 |
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http://www.kb.cert.org/vuls/id/176363 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200410-08.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2004 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/1.0 |
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