Information disclosure in PHP - CVE-2010-2531
Published: January 19, 2023 / Updated: June 8, 2025
Vulnerability identifier: #VU110288
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-2010-2531
CWE-ID: CWE-200
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.
The var_export function in PHP 5.2 before 5.2.14 and 5.3 before 5.3.3 flushes the output buffer to the user when certain fatal errors occur, even if display_errors is off, which allows remote attackers to obtain sensitive information by causing the application to exceed limits for memory, execution time, or recursion.
Affected software
PHP
Gentoo Linux
dev-lang/php
Gentoo Linux
dev-lang/php
How to mitigate CVE-2010-2531
Install update from vendor's website.
PHP - update to 5.3.3
dev-lang/php - update to 5.3.8
dev-lang/php - update to 5.3.8
External References
- http://www.php.net/archive/2010.php#id2010-07-22-1
- https://bugzilla.redhat.com/show_bug.cgi?id=617673
- http://www.php.net/archive/2010.php#id2010-07-22-2
- http://www.openwall.com/lists/oss-security/2010/07/16/3
- http://www.openwall.com/lists/oss-security/2010/07/13/1
- http://svn.php.net/viewvc/php/php-src/trunk/ext/standard/tests/general_functions/var_export_error2.phpt?view=log&pathrev=301143
- http://support.apple.com/kb/HT4312
- http://lists.apple.com/archives/security-announce/2010//Aug/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
- http://support.apple.com/kb/HT4435
- http://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00000.html
- http://www.redhat.com/support/errata/RHSA-2010-0919.html
- http://www.vupen.com/english/advisories/2010/3081
- http://secunia.com/advisories/42410
- http://marc.info/?l=bugtraq&m=130331363227777&w=2
- http://www.debian.org/security/2011/dsa-2266
- http://marc.info/?l=bugtraq&m=133469208622507&w=2