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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
MD5 | b413793adf8cac8b1de5c98182898751
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
MD5 | 3a7b11ddafda5c0c062b3746c3db17dd
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
MD5 | 84dbb60b867b299238ac262bdf6502cf
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
MD5 | 1cfbb7a7853f24a6af516dd457d79105
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
MD5 | fd52a465cdd2ce15e3d251c23c619b89
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
MD5 | f5b104ced0f5c135fb4a893b26b39f7e
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
MD5 | 2634cdb0d73b11af15ed832e3de9166c
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
MD5 | fe2bbec632beef71f49dddaa0feeb464
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
MD5 | 9f1b371166848398d7d5f2caa0e817d8
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
MD5 | 9967a0e004a2ea68fb789218227d548b
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
MD5 | 2eb5f61253d91dcaecbc52a34294fc17
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
MD5 | b046400016ac6c335e39243cf3d44777
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
MD5 | e4d4e2b2811a3cf4254d7ba2637b5c40
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