GLSA Advocate
Joined: 12 May 2004 Posts: 2663
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Posted: Fri Jul 22, 2005 6:04 am Post subject: [ GLSA 200507-19 ] zlib: Buffer overflow |
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Gentoo Linux Security Advisory
Title: zlib: Buffer overflow (GLSA 200507-19)
Severity: high
Exploitable: remote
Date: July 22, 2005
Bug(s): #99751
ID: 200507-19
Synopsis
zlib is vulnerable to a buffer overflow which could potentially lead to execution of arbitrary code.
Background
zlib is a widely used free and patent unencumbered data compression library.
Affected Packages
Package: sys-libs/zlib
Vulnerable: < 1.2.3
Unaffected: >= 1.2.3
Architectures: All supported architectures
Description
zlib improperly handles invalid data streams which could lead to a buffer overflow.
Impact
By creating a specially crafted compressed data stream, attackers can overwrite data structures for applications that use zlib, resulting in arbitrary code execution or a Denial of Service.
Workaround
There is no known workaround at this time.
Resolution
All zlib users should upgrade to the latest version: Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=sys-libs/zlib-1.2.3" |
References
Full Disclosure Announcement
CAN-2005-1849
Last edited by GLSA on Sun May 07, 2006 4:58 pm; edited 1 time in total |
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