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authorV3n3RiX <venerix@redcorelinux.org>2017-10-09 18:53:29 +0100
committerV3n3RiX <venerix@redcorelinux.org>2017-10-09 18:53:29 +0100
commit4f2d7949f03e1c198bc888f2d05f421d35c57e21 (patch)
treeba5f07bf3f9d22d82e54a462313f5d244036c768 /metadata/glsa/glsa-200512-01.xml
reinit the tree, so we can have metadata
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+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="200512-01">
+ <title>Perl: Format string errors can lead to code execution</title>
+ <synopsis>
+ A fix is available for Perl to mitigate the effects of format string
+ programming errors, that could otherwise be exploited to execute arbitrary
+ code.
+ </synopsis>
+ <product type="ebuild">Perl</product>
+ <announced>2005-12-07</announced>
+ <revised>2005-12-07: 01</revised>
+ <bug>114113</bug>
+ <access>remote and local</access>
+ <affected>
+ <package name="dev-lang/perl" auto="yes" arch="*">
+ <unaffected range="ge">5.8.7-r3</unaffected>
+ <unaffected range="rge">5.8.6-r8</unaffected>
+ <vulnerable range="lt">5.8.7-r3</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ Perl is a stable, cross-platform programming language created by
+ Larry Wall. It contains printf functions that allows construction of
+ strings from format specifiers and parameters, like the C printf
+ functions. A well-known class of vulnerabilities, called format string
+ errors, result of the improper use of the printf functions in C. Perl
+ in itself is vulnerable to a limited form of format string errors
+ through its own sprintf function, especially through wrapper functions
+ that call sprintf (for example the syslog function) and by taking
+ advantage of Perl powerful string expansion features rather than using
+ format string specifiers.
+ </p>
+ </background>
+ <description>
+ <p>
+ Jack Louis discovered a new way to exploit format string errors in
+ Perl that could lead to the execution of arbitrary code. This is
+ perfomed by causing an integer wrap overflow in the efix variable
+ inside the function Perl_sv_vcatpvfn. The proposed fix closes that
+ specific exploitation vector to mitigate the risk of format string
+ programming errors in Perl. This fix does not remove the need to fix
+ such errors in Perl code.
+ </p>
+ </description>
+ <impact type="high">
+ <p>
+ Perl applications making improper use of printf functions (or
+ derived functions) using untrusted data may be vulnerable to the
+ already-known forms of Perl format string exploits and also to the
+ execution of arbitrary code.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ Fix all misbehaving Perl applications so that they make proper use
+ of the printf and derived Perl functions.
+ </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="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3962">CVE-2005-3962</uri>
+ <uri link="https://www.dyadsecurity.com/perl-0002.html">Dyad Security Advisory</uri>
+ <uri link="http://www.securityfocus.com/archive/1/418460/30/30">Research on format string errors in Perl</uri>
+ </references>
+ <metadata tag="requester" timestamp="2005-12-01T12:36:20Z">
+ koon
+ </metadata>
+ <metadata tag="submitter" timestamp="2005-12-01T16:05:52Z">
+ koon
+ </metadata>
+ <metadata tag="bugReady" timestamp="2005-12-07T10:06:40Z">
+ koon
+ </metadata>
+</glsa>