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CVE-2012-2143

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 201209-24
Posted Sep 28, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201209-24 - Multiple vulnerabilities have been found in PostgreSQL which may allow a remote attacker to conduct several attacks. Versions less than 9.1.5 are affected.

tags | advisory, remote, vulnerability
systems | linux, gentoo
advisories | CVE-2012-0866, CVE-2012-0867, CVE-2012-0868, CVE-2012-2143, CVE-2012-2655, CVE-2012-3488, CVE-2012-3489
SHA-256 | aadd0a998d1f2db81a1c115cf7617428cb68b328b2051e91f2e2de0940ce8305
Gentoo Linux Security Advisory 201209-03
Posted Sep 24, 2012
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201209-3 - Multiple vulnerabilities were found in PHP, the worst of which lead to remote execution of arbitrary code. Versions less than 5.3.15 are affected.

tags | advisory, remote, arbitrary, php, vulnerability
systems | linux, gentoo
advisories | CVE-2011-1398, CVE-2011-3379, CVE-2011-4566, CVE-2011-4885, CVE-2012-0057, CVE-2012-0788, CVE-2012-0789, CVE-2012-0830, CVE-2012-0831, CVE-2012-1172, CVE-2012-1823, CVE-2012-2143, CVE-2012-2311, CVE-2012-2335, CVE-2012-2336, CVE-2012-2386, CVE-2012-2688, CVE-2012-3365, CVE-2012-3450
SHA-256 | 9f816b924ad418620e160f8c0c949d6a934cbb7b2edf6d8854a05c114583d85c
Apple Security Advisory 2012-09-19-2
Posted Sep 22, 2012
Authored by Apple | Site apple.com

Apple Security Advisory 2012-09-19-2 - OS X Mountain Lion v10.8.2, OS X Lion v10.7.5 and Security Update 2012-004 are now available and address Apache, BIND, CoreText, Data Security, and many other vulnerabilities.

tags | advisory, vulnerability
systems | apple, osx
advisories | CVE-2011-3026, CVE-2011-3048, CVE-2011-3368, CVE-2011-3389, CVE-2011-3607, CVE-2011-4313, CVE-2011-4317, CVE-2011-4599, CVE-2012-0021, CVE-2012-0031, CVE-2012-0053, CVE-2012-0643, CVE-2012-0650, CVE-2012-0652, CVE-2012-0668, CVE-2012-0670, CVE-2012-0671, CVE-2012-0831, CVE-2012-1172, CVE-2012-1173, CVE-2012-1667, CVE-2012-1823, CVE-2012-2143, CVE-2012-2311, CVE-2012-2386, CVE-2012-2688, CVE-2012-3716, CVE-2012-3718
SHA-256 | 40b0db811b217e85fb6806b53d13edb126d8f6537576e1fb80a6d9e6c2266a62
Red Hat Security Advisory 2012-1046-01
Posted Jun 28, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1046-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. It was discovered that the PHP XSL extension did not restrict the file writing capability of libxslt. A remote attacker could use this flaw to create or overwrite an arbitrary file that is writable by the user running PHP, if a PHP script processed untrusted eXtensible Style Sheet Language Transformations content. Note: This update disables file writing by default. A new PHP configuration directive, "xsl.security_prefs", can be used to enable file writing in XSLT.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2010-2950, CVE-2011-4153, CVE-2012-0057, CVE-2012-0781, CVE-2012-0789, CVE-2012-1172, CVE-2012-2143, CVE-2012-2336, CVE-2012-2386
SHA-256 | fe71e26fd75c9403f91014baf93c4a6d167a5d5aef0be73d9f6c0fe60b8a1865
Red Hat Security Advisory 2012-1047-01
Posted Jun 28, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1047-01 - PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. It was discovered that the PHP XSL extension did not restrict the file writing capability of libxslt. A remote attacker could use this flaw to create or overwrite an arbitrary file that is writable by the user running PHP, if a PHP script processed untrusted eXtensible Style Sheet Language Transformations content. Note: This update disables file writing by default. A new PHP configuration directive, "xsl.security_prefs", can be used to enable file writing in XSLT.

tags | advisory, remote, web, arbitrary, php
systems | linux, redhat
advisories | CVE-2010-2950, CVE-2011-4153, CVE-2012-0057, CVE-2012-0789, CVE-2012-1172, CVE-2012-2143, CVE-2012-2336, CVE-2012-2386
SHA-256 | ad1e0d74169944968d087c38eeee1c4b790cf754e68c22a60bc2f608214be628
Red Hat Security Advisory 2012-1037-01
Posted Jun 25, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1037-01 - PostgreSQL is an advanced object-relational database management system. A flaw was found in the way the crypt() password hashing function from the optional PostgreSQL pgcrypto contrib module performed password transformation when used with the DES algorithm. If the password string to be hashed contained the 0x80 byte value, the remainder of the string was ignored when calculating the hash, significantly reducing the password strength. This made brute-force guessing more efficient as the whole password was not required to gain access to protected resources.

tags | advisory
systems | linux, redhat
advisories | CVE-2012-2143, CVE-2012-2655
SHA-256 | 43dd84d900e99c3f1b88175c8d6cb0d767071c6eb772b1ec31adf8ed1f003585
Red Hat Security Advisory 2012-1036-01
Posted Jun 25, 2012
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2012-1036-01 - PostgreSQL is an advanced object-relational database management system. A flaw was found in the way the crypt() password hashing function from the optional PostgreSQL pgcrypto contrib module performed password transformation when used with the DES algorithm. If the password string to be hashed contained the 0x80 byte value, the remainder of the string was ignored when calculating the hash, significantly reducing the password strength. This made brute-force guessing more efficient as the whole password was not required to gain access to protected resources.

tags | advisory
systems | linux, redhat
advisories | CVE-2012-2143
SHA-256 | 91db521987a8f25ecabb7834e60cc56577345d64eb97ff886fb0176153721100
Ubuntu Security Notice USN-1481-1
Posted Jun 20, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1481-1 - It was discovered that PHP incorrectly handled certain Tidy::diagnose operations on invalid objects. A remote attacker could use this flaw to cause PHP to crash, leading to a denial of service. It was discovered that PHP incorrectly handled certain multi-file upload filenames. A remote attacker could use this flaw to cause a denial of service, or to perform a directory traversal attack. Rubin Xu and Joseph Bonneau discovered that PHP incorrectly handled certain Unicode characters in passwords passed to the crypt() function. A remote attacker could possibly use this flaw to bypass authentication. Various other issues were also addressed.

tags | advisory, remote, denial of service, php, file upload
systems | linux, ubuntu
advisories | CVE-2012-0781, CVE-2012-1172, CVE-2012-2143, CVE-2012-2317, CVE-2012-2386, CVE-2012-0781, CVE-2012-1172, CVE-2012-2143, CVE-2012-2317, CVE-2012-2335, CVE-2012-2336, CVE-2012-2386
SHA-256 | ef532b3bed02d20d59b37b0ac7ce3245a50645818f614071e2b2ed22dce3926e
Mandriva Linux Security Advisory 2012-093
Posted Jun 16, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-093 - There is a programming error in the DES implementation used in crypt() in ext/standard/crypt_freesec.c when handling input which contains characters that can not be represented with 7-bit ASCII. When the input contains characters with only the most significant bit set (0x80), that character and all characters after it will be ignored. An integer overflow, leading to heap-based buffer overflow was found in the way Phar extension of the PHP scripting language processed certain fields by manipulating TAR files. A remote attacker could provide a specially-crafted TAR archive file, which once processed in an PHP application using the Phar extension could lead to denial of service , or, potentially arbitrary code execution with the privileges of the user running the application. The updated php packages have been upgraded to the 5.3.14 version which is not vulnerable to these issues.

tags | advisory, remote, denial of service, overflow, arbitrary, php, code execution
systems | linux, mandriva
advisories | CVE-2012-2143, CVE-2012-2386
SHA-256 | d629aa5ad6b017f11eebcaf00da0dc55ea69f71f8b4ab435942012f4d3efe4e7
Mandriva Linux Security Advisory 2012-092
Posted Jun 16, 2012
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2012-092 - Multiple vulnerabilities has been discovered and corrected in postgresql. Fix incorrect password transformation in contrib/pgcrypto's DES crypt() function (Solar Designer). If a password string contained the byte value 0x80, the remainder of the password was ignored, causing the password to be much weaker than it appeared. With this fix, the rest of the string is properly included in the DES hash. Any stored password values that are affected by this bug will thus no longer match, so the stored values may need to be updated. Ignore SECURITY DEFINER and SET attributes for a procedural language's call handler (Tom Lane). Applying such attributes to a call handler could crash the server. This advisory provides the latest versions of PostgreSQL that is not vulnerable to these issues.

tags | advisory, vulnerability
systems | linux, mandriva
advisories | CVE-2012-2143, CVE-2012-2655
SHA-256 | 1edfeb5c298d59aca21fc94dd3d94074bf90df118aaad1545a26a577513db22c
Debian Security Advisory 2491-1
Posted Jun 11, 2012
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2491-1 - Two vulnerabilities were discovered in PostgreSQL, an SQL database server.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2012-2143, CVE-2012-2655
SHA-256 | 08cee1118490a95890ce39cec136e45a1e76b0f30a416aecbf838f863b61cc51
Ubuntu Security Notice USN-1461-1
Posted Jun 5, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1461-1 - It was discovered that PostgreSQL incorrectly handled certain bytes passed to the crypt() function when using DES encryption. An attacker could use this flaw to incorrectly handle authentication. It was discovered that PostgreSQL incorrectly handled SECURITY DEFINER and SET attributes on procedural call handlers. An attacker could use this flaw to cause PostgreSQL to crash, leading to a denial of service. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2012-2143, CVE-2012-2655, CVE-2012-2143, CVE-2012-2655
SHA-256 | d480f4d0c7f143e0107319fc134d8cf735ea4e8f2d1e69b46c520248589c93c4
FreeBSD Security Advisory - Incorrect crypt() Hashing
Posted May 30, 2012
Site security.freebsd.org

FreeBSD Security Advisory - There is a programming error in the DES implementation used in crypt() when handling input which contains characters that can not be represented with 7-bit ASCII. When the input contains characters with only the most significant bit set (0x80), that character and all characters after it will be ignored.

tags | advisory
systems | freebsd
advisories | CVE-2012-2143
SHA-256 | c93d455eb30d8a248bc3a8f2e54b0feb1b59e15469c93c07b2e5518cbee945c4
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