CVE-2010-2950

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-09-28 · updated 2026-06-16
Weakness: CWE-134

Description

Format string vulnerability in stream.c in the phar extension in PHP 5.3.x through 5.3.3 allows context-dependent attackers to obtain sensitive information (memory contents) and possibly execute arbitrary code via a crafted phar:// URI that is not properly handled by the phar_stream_flush function, leading to errors in the php_stream_wrapper_log_error function. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-2094.

Affected products

PHP: 5.3.0, 5.3.1, 5.3.2, 5.3.3

References

http://lists.apple.com/archives/security-announce/2011/Mar/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html
http://marc.info/?l=bugtraq&m=130331363227777&w=2
http://php-security.org/2010/05/14/mops-2010-024-php-phar_stream_flush-format-string-vulnerability/index.html
http://security-tracker.debian.org/tracker/CVE-2010-2950
http://support.apple.com/kb/HT4581
http://svn.php.net/viewvc?view=revision&revision=302565
http://www.mandriva.com/security/advisories?name=MDVSA-2010:254
http://www.php.net/ChangeLog-5.php
http://www.php.net/archive/2010.php#id2010-12-10-1
http://www.php.net/releases/5_3_4.php
https://bugzilla.redhat.com/show_bug.cgi?id=598537

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