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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200502-13">
<title>Perl: Vulnerabilities in perl-suid wrapper</title>
<synopsis>
Vulnerabilities leading to file overwriting and code execution with
elevated privileges have been discovered in the perl-suid wrapper.
</synopsis>
<product type="ebuild">Perl</product>
<announced>February 11, 2005</announced>
<revised>February 11, 2005: 01</revised>
<bug>80460</bug>
<access>local</access>
<affected>
<package name="dev-lang/perl" auto="yes" arch="*">
<unaffected range="ge">5.8.6-r3</unaffected>
<unaffected range="rge">5.8.5-r4</unaffected>
<unaffected range="rge">5.8.4-r3</unaffected>
<unaffected range="rge">5.8.2-r3</unaffected>
<vulnerable range="lt">5.8.6-r3</vulnerable>
</package>
</affected>
<background>
<p>
Perl is a stable, cross-platform programming language created by
Larry Wall. The perl-suid wrapper allows the use of setuid perl
scripts, i.e. user-callable Perl scripts which have elevated
privileges. This function is enabled only if you have the perlsuid USE
flag set.
</p>
</background>
<description>
<p>
perl-suid scripts honor the PERLIO_DEBUG environment variable and
write to that file with elevated privileges (CAN-2005-0155).
Furthermore, calling a perl-suid script with a very long path while
PERLIO_DEBUG is set could trigger a buffer overflow (CAN-2005-0156).
</p>
</description>
<impact type="high">
<p>
A local attacker could set the PERLIO_DEBUG environment variable
and call existing perl-suid scripts, resulting in file overwriting and
potentially the execution of arbitrary code with root privileges.
</p>
</impact>
<workaround>
<p>
You are not vulnerable if you do not have the perlsuid USE flag
set or do not use perl-suid scripts.
</p>
</workaround>
<resolution>
<p>
All Perl users should upgrade to the latest version:
</p>
<code>
# emerge --sync
# emerge --ask --oneshot --verbose dev-lang/perl</code>
</resolution>
<references>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0155">CAN-2005-0155</uri>
<uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0156">CAN-2005-0156</uri>
</references>
<metadata tag="requester" timestamp="Fri, 4 Feb 2005 14:45:58 +0000">
koon
</metadata>
<metadata tag="bugReady" timestamp="Fri, 11 Feb 2005 15:34:36 +0000">
koon
</metadata>
<metadata tag="submitter" timestamp="Fri, 11 Feb 2005 16:11:49 +0000">
koon
</metadata>
</glsa>