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<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200408-16">
<title>glibc: Information leak with LD_DEBUG</title>
<synopsis>
glibc contains an information leak vulnerability allowing the debugging of
SUID binaries.
</synopsis>
<product type="ebuild">glibc</product>
<announced>August 16, 2004</announced>
<revised>May 28, 2006: 04</revised>
<bug>59526</bug>
<access>local</access>
<affected>
<package name="sys-libs/glibc" auto="yes" arch="alpha arm hppa ia64 sparc s390">
<unaffected range="ge">2.3.2-r11</unaffected>
<vulnerable range="le">2.3.2-r10</vulnerable>
</package>
<package name="sys-libs/glibc" auto="yes" arch="x86 ppc">
<unaffected range="ge">2.3.3.20040420-r1</unaffected>
<vulnerable range="le">2.3.3.20040420</vulnerable>
</package>
<package name="sys-libs/glibc" auto="yes" arch="mips">
<unaffected range="ge">2.3.4.20040619-r1</unaffected>
<vulnerable range="le">2.3.3.20040420</vulnerable>
</package>
<package name="sys-libs/glibc" auto="yes" arch="amd64">
<unaffected range="ge">2.3.4.20040619-r1</unaffected>
<vulnerable range="le">2.3.4.20040619</vulnerable>
</package>
<package name="sys-libs/glibc" auto="yes" arch="ppc64">
<unaffected range="ge">2.3.4.20040808</unaffected>
<vulnerable range="le">2.3.4.20040605</vulnerable>
</package>
</affected>
<background>
<p>
The GNU C library defines various Unix-like "system calls" and other
basic facilities needed for a standard POSIX-like application to
operate.
</p>
</background>
<description>
<p>
Silvio Cesare discovered a potential information leak in glibc. It
allows LD_DEBUG on SUID binaries where it should not be allowed. This
has various security implications, which may be used to gain
confidentional information.
</p>
</description>
<impact type="low">
<p>
An attacker can gain the list of symbols a SUID application uses and
their locations and can then use a trojaned library taking precendence
over those symbols to gain information or perform further exploitation.
</p>
</impact>
<workaround>
<p>
There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version of glibc.
</p>
</workaround>
<resolution>
<p>
All glibc users should upgrade to the latest version:
</p>
<code>
# emerge sync
# emerge -pv your_version
# emerge your_version</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1453">CVE-2004-1453</uri>
</references>
<metadata tag="submitter" timestamp="Thu, 5 Aug 2004 17:16:41 +0000">
jaervosz
</metadata>
</glsa>
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