CVE-2009-3294

Name: CVE-2009-3294
Creator: NVD / NIST
Published: 2009-09-22T10:30:00.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.73%

Last modified Jun 16, 2026

CVE-2009-3294 is a vulnerability of currently unknown severity. The popen API function in TSRM/tsrm_win32.c in PHP before 5.2.11 and 5.3.x before 5.3.1, when running on certain Windows operating systems, allows context-dependent attackers to cause a denial of service (crash) via a crafted (1) "e" or (2) "er" string in the second argument (aka mode), possibly related to the _fdopen function in the Microsoft C runtime library. NOTE: this might not cross privilege boundaries except in rare cases in which the mode argument is accessible to an attacker outside of an application that uses the popen function.. EPSS estimates a 2.73% chance of exploitation in the next 30 days.

Description

The popen API function in TSRM/tsrm_win32.c in PHP before 5.2.11 and 5.3.x before 5.3.1, when running on certain Windows operating systems, allows context-dependent attackers to cause a denial of service (crash) via a crafted (1) "e" or (2) "er" string in the second argument (aka mode), possibly related to the _fdopen function in the Microsoft C runtime library. NOTE: this might not cross privilege boundaries except in rare cases in which the mode argument is accessible to an attacker outside of an application that uses the popen function.

Metrics

EPSS Probability

2.73%

84.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-134

Affected Software

Vendor	Product	Versions
Php	Php	>= 5.2.0, < 5.2.11
Php	Php	>= 5.3.0, < 5.3.1

References

http://bugs.php.net/bug.php?id=44683Exploit, Vendor Advisory
http://news.php.net/php.announce/79Vendor Advisory
http://svn.php.net/viewvc?view=revision&revision=287779Vendor Advisory
http://www.openwall.com/lists/oss-security/2009/09/20/1Mailing List, Patch
http://www.openwall.com/lists/oss-security/2009/11/20/2Mailing List
http://www.openwall.com/lists/oss-security/2009/11/20/3Mailing List
http://www.osvdb.org/58188Broken Link
http://www.php.net/ChangeLog-5.phpVendor Advisory
http://www.php.net/ChangeLog-5.php#5.2.11Vendor Advisory
http://www.php.net/releases/5_2_11.phpPatch, Vendor Advisory
http://www.php.net/releases/5_3_1.phpVendor Advisory
http://bugs.php.net/bug.php?id=44683Exploit, Vendor Advisory
http://news.php.net/php.announce/79Vendor Advisory
http://svn.php.net/viewvc?view=revision&revision=287779Vendor Advisory
http://www.openwall.com/lists/oss-security/2009/09/20/1Mailing List, Patch
http://www.openwall.com/lists/oss-security/2009/11/20/2Mailing List
http://www.openwall.com/lists/oss-security/2009/11/20/3Mailing List
http://www.osvdb.org/58188Broken Link
http://www.php.net/ChangeLog-5.phpVendor Advisory
http://www.php.net/ChangeLog-5.php#5.2.11Vendor Advisory
http://www.php.net/releases/5_2_11.phpPatch, Vendor Advisory
http://www.php.net/releases/5_3_1.phpVendor Advisory

Timeline

Published: Sep 22, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-3294?

How severe is CVE-2009-3294?

Severity scoring for CVE-2009-3294 is pending analysis. The EPSS model estimates a 2.73% probability of exploitation in the next 30 days.

How do I fix CVE-2009-3294?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-3294?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST