#VU110309 Cryptographic issues in PHP - CVE-2010-1128
Published: December 10, 2010 / Updated: June 12, 2025
Vulnerability identifier: #VU110309
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2010-1128
CWE-ID: CWE-310
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
PHP
PHP
Software vendor:
PHP Group
PHP Group
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The Linear Congruential Generator (LCG) in PHP before 5.2.13 does not provide the expected entropy, which makes it easier for context-dependent attackers to guess values that were intended to be unpredictable, as demonstrated by session cookies generated by using the uniqid function.
Remediation
Install update from vendor's website.
External links
- http://secunia.com/advisories/38708
- http://secunia.com/advisories/42410
- http://www.php.net/ChangeLog-5.php
- http://www.php.net/releases/5_2_13.php
- http://www.redhat.com/support/errata/RHSA-2010-0919.html
- http://www.securityfocus.com/bid/38430
- http://www.vupen.com/english/advisories/2010/0479
- http://www.vupen.com/english/advisories/2010/3081