Vulnerability identifier: #VU43910

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-2143

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PostgreSQL
Server applications / Database software
FreeBSD
Operating systems & Components / Operating system
PHP
Universal components / Libraries / Scripting languages

Vendor: PostgreSQL Global Development Group
FreeBSD Foundation
PHP Group

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

The crypt_des (aka DES-based crypt) function in FreeBSD before 9.0-RELEASE-p2, as used in PHP, PostgreSQL, and other products, does not process the complete cleartext password if this password contains a 0x80 character, which makes it easier for context-dependent attackers to obtain access via an authentication attempt with an initial substring of the intended password, as demonstrated by a Unicode password. As per: http://git.php.net/?p=php-src.git;a=commitdiff;h=aab49e934de1fff046e659cbec46e3d053b41c34 and http://git.php.net/?p=php-src.git;a=commitdiff_plain;h=aab49e934de1fff046e659cbec46e3d053b41c34 PHP 5.3.13 and earlier are vulnerable.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PostgreSQL: 8.3, 8.4, 9.0, 9.1

FreeBSD: 1.0 - 9.1

PHP: 3.0 - 3.0.18, 4.0 - 4.0.7, 4.1 - 4.11, 4.2 - 4.2.3, 4.3 - 4.3.11, 4.4 - 4.4.9, 5.0 - 5.0.5, 5.1 - 5.1.6, 5.2 - 5.2.17, 5.3 - 5.3.12, 5.4, 5.5, 7.0, 7.1, 7.2, 7.3, 7.4

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External links
http://git.php.net/?p=php-src.git;a=commit;h=aab49e934de1fff046e659cbec46e3d053b41c34
http://git.postgresql.org/gitweb/?p=postgresql.git&a=commit&h=932ded2ed51e8333852e370c7a6dad75d9f236f9
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
http://lists.apple.com/archives/security-announce/2012/Sep/msg00004.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-June/082258.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-June/082292.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-June/082294.html
http://lists.opensuse.org/opensuse-security-announce/2012-07/msg00003.html
http://lists.opensuse.org/opensuse-updates/2012-09/msg00102.html
http://lists.opensuse.org/opensuse-updates/2012-10/msg00013.html
http://lists.opensuse.org/opensuse-updates/2012-10/msg00024.html
http://rhn.redhat.com/errata/RHSA-2012-1037.html
http://secunia.com/advisories/49304
http://secunia.com/advisories/50718
http://security.freebsd.org/advisories/FreeBSD-SA-12:02.crypt.asc
http://support.apple.com/kb/HT5501
http://www.debian.org/security/2012/dsa-2491
http://www.mandriva.com/security/advisories?name=MDVSA-2012:092
http://www.postgresql.org/docs/8.3/static/release-8-3-19.html
http://www.postgresql.org/docs/8.4/static/release-8-4-12.html
http://www.postgresql.org/docs/9.0/static/release-9-0-8.html
http://www.postgresql.org/docs/9.1/static/release-9-1-4.html
http://www.postgresql.org/support/security/
http://www.securitytracker.com/id?1026995
http://bugzilla.redhat.com/show_bug.cgi?id=816956

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.