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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200507-19">
<title>zlib: Buffer overflow</title>
zlib is vulnerable to a buffer overflow which could potentially lead to
execution of arbitrary code.
<product type="ebuild">zlib</product>
<announced>July 22, 2005</announced>
<revised>July 22, 2005: 01</revised>
<package name="sys-libs/zlib" auto="yes" arch="*">
<unaffected range="ge">1.2.3</unaffected>
<vulnerable range="lt">1.2.3</vulnerable>
zlib is a widely used free and patent unencumbered data
compression library.
zlib improperly handles invalid data streams which could lead to a
buffer overflow.
<impact type="high">
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.
There is no known workaround at this time.
All zlib users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose &quot;&gt;=sys-libs/zlib-1.2.3&quot;</code>
<uri link="">Full Disclosure Announcement</uri>
<uri link="">CAN-2005-1849</uri>
<metadata tag="requester" timestamp="Thu, 21 Jul 2005 05:28:09 +0000">
<metadata tag="submitter" timestamp="Thu, 21 Jul 2005 07:38:10 +0000">
<metadata tag="bugReady" timestamp="Thu, 21 Jul 2005 18:38:18 +0000">