Cryptographic issues in PHP - CVE-2011-2483
Published: April 23, 2024 / Updated: June 8, 2025
Vulnerability identifier: #VU110278
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-2483
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
crypt_blowfish before 1.1, as used in PHP before 5.3.7 on certain platforms, PostgreSQL before 8.4.9, and other products, does not properly handle 8-bit characters, which makes it easier for context-dependent attackers to determine a cleartext password by leveraging knowledge of a password hash.
Affected software
PHP
Gentoo Linux
Slackware Linux
dev-lang/php
php
dev-db/postgresql
dev-db/postgresql-server
Gentoo Linux
Slackware Linux
dev-lang/php
php
dev-db/postgresql
dev-db/postgresql-server
How to mitigate CVE-2011-2483
Install update from vendor's website.
PHP - update to 5.3.7
dev-lang/php - update to 5.3.8
php - update to 5.3.8
dev-db/postgresql - update to 9.0.5
dev-db/postgresql-server - update to 9.0.5
dev-lang/php - update to 5.3.8
php - update to 5.3.8
dev-db/postgresql - update to 9.0.5
dev-db/postgresql-server - update to 9.0.5
External References
- http://www.openwall.com/crypt/
- http://www.php.net/archive/2011.php#id2011-08-18-1
- http://www.securityfocus.com/bid/49241
- http://www.php.net/ChangeLog-5.php#5.3.7
- http://php.net/security/crypt_blowfish
- http://freshmeat.net/projects/crypt_blowfish
- http://www.redhat.com/support/errata/RHSA-2011-1378.html
- http://www.postgresql.org/docs/8.4/static/release-8-4-9.html
- http://www.redhat.com/support/errata/RHSA-2011-1377.html
- http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00015.html
- http://www.ubuntu.com/usn/USN-1229-1
- http://www.redhat.com/support/errata/RHSA-2011-1423.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:165
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:180
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:179
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:178
- http://www.debian.org/security/2011/dsa-2340
- http://support.apple.com/kb/HT5130
- http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
- http://www.debian.org/security/2012/dsa-2399
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69319