php-pear: CVE-2006-0931: PEAR::Archive_Tar directory traversal vulnerability

Debian Bug report logs - #368545
php-pear: CVE-2006-0931: PEAR::Archive_Tar directory traversal vulnerability

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Alec Berryman <alec@thened.net>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: php-pear: CVE-2006-0931: PEAR::Archive_Tar directory traversal vulnerability

Date: Mon, 22 May 2006 23:34:26 +0100

Package: php-pear
Severity: important
Tags: security

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CVE-2006-0931: "Directory traversal vulnerability in PEAR::Archive_Tar
1.2 allows remote attackers to create and overwrite arbitrary files via
certain crafted pathnames in a TAR archive."

This is PEAR bug 6933 [1] and appears unfixed upstream; the bug is open
and there has not been a new release in 2006.  I presume that Debian's
version is affected, but have not tested.  Unfortunately, the advisory
[2] does not include steps to reproduce, but rather has a vague link to
a utility to create sample malicious archives.

sarge and woody's php4-pear also contain PEAR::Archive_Tar.

Please include the CVE in your changelog.

Thanks,

Alec

[1] http://pear.php.net/bugs/bug.php?id=6933
[2] http://www.hamid.ir/security/phptar.txt

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Message #10 received at 368545-done@bugs.debian.org (full text, mbox, reply):

From: sean finney <seanius@debian.org>

To: 368545-done@bugs.debian.org

Subject: not a vulnerability in php

Date: Tue, 19 Sep 2006 09:17:09 +0200

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hi alec,

examining this CVE report further, and discussing it with the security
team, the consensus is that this is not a vulnerability in php.  the
attack vector is a just-so-slightly refactored input-sanitizing attack.
it is the responsibility of the application in question to ensure that
it does not do anything it shouldn't with the tarfiles in question, not
the php engine's.

however, if there are packages in debian using Archive::Tar, they should
certainly be inspected for this kind of vulnerability.


thanks,
	sean

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