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CVE-2007-2727

2.6 · LOW

The mcrypt_create_iv function in ext/mcrypt/mcrypt.c in PHP before 4.4.7, 5.2.1, and possibly 5.0.x and other PHP 5 versions, calls php_rand_r with an uninitialized seed variable and therefore alwa…

Published May 16, 2007phpEPSS 1.90%

Overview

CVE-2007-2727 is a low-severity vulnerability affecting php php. It was published on May 16, 2007 and has a CVSS 2.0 base score of 2.6 (LOW).

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The mcrypt_create_iv function in ext/mcrypt/mcrypt.c in PHP before 4.4.7, 5.2.1, and possibly 5.0.x and other PHP 5 versions, calls php_rand_r with an uninitialized seed variable and therefore always generates the same initialization vector (IV), which might allow context-dependent attackers to decrypt certain data more easily because of the guessable encryption keys.

Remediation

Check the references section for vendor advisories and patches from php. Update php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
phpphp>= 4.4.0, < 4.4.7Affected

References

Refblog.php-security.org/archives/80-Watching-the-PHP-CVS.htmlRefbugs.php.net/bug.php?id=40999Refcvs.php.net/viewvc.cgi/php-src/ext/mcrypt/mcrypt.c?r1=1.91.2.3.2.9&r2=1.91.2.3.2.10Refosvdb.org/36087Refsecunia.com/advisories/26895Refwww.fortheloot.com/public/mcrypt.patchRefwww.mandriva.com/security/advisories?name=MDKSA-2007:187Refwww.novell.com/linux/security/advisories/2007_15_sr.htmlRefwww.php.net/ChangeLog-5.phpRefwww.securityfocus.com/bid/23984

How CyberStrike helps

Frequently asked questions

What is CVE-2007-2727?

CVE-2007-2727 is a low-severity vulnerability affecting php php. It was published on May 16, 2007 and has a CVSS 2.0 base score of 2.6 (LOW).

How severe is CVE-2007-2727?

This vulnerability has a CVSS 2.0 base score of 2.6, rated LOW. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2007-2727?

Check the references section for vendor advisories and patches from php. Update php to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2007-2727?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2007-2727 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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