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<?xml version="1.0" encoding="utf-8"?>
<glsa id="200408-16">
<title>glibc: Information leak with LD_DEBUG</title>
glibc contains an information leak vulnerability allowing the debugging of
SUID binaries.
<product type="ebuild">glibc</product>
<announced>August 16, 2004</announced>
<revised>May 28, 2006: 04</revised>
<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 name="sys-libs/glibc" auto="yes" arch="x86 ppc">
<unaffected range="ge"></unaffected>
<vulnerable range="le"></vulnerable>
<package name="sys-libs/glibc" auto="yes" arch="mips">
<unaffected range="ge"></unaffected>
<vulnerable range="le"></vulnerable>
<package name="sys-libs/glibc" auto="yes" arch="amd64">
<unaffected range="ge"></unaffected>
<vulnerable range="le"></vulnerable>
<package name="sys-libs/glibc" auto="yes" arch="ppc64">
<unaffected range="ge"></unaffected>
<vulnerable range="le"></vulnerable>
The GNU C library defines various Unix-like "system calls" and other
basic facilities needed for a standard POSIX-like application to
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.
<impact type="low">
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.
There is no known workaround at this time. All users are encouraged to
upgrade to the latest available version of glibc.
All glibc users should upgrade to the latest version:
# emerge sync
# emerge -pv your_version
# emerge your_version</code>
<uri link="">CVE-2004-1453</uri>
<metadata tag="submitter" timestamp="Thu, 5 Aug 2004 17:16:41 +0000">