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CVE-2007-2727

Date: May 16, 2007

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.

Severity Score

Related Resources (13)

http://www.securityfocus.com/bid/23984
https://people.canonical.com/~ubuntu-security/cve/CVE-2007-2727
http://www.fortheloot.com/public/mcrypt.patch
http://osvdb.org/36087
http://www.mandriva.com/security/advisories?name=MDKSA-2007:187
http://www.php.net/ChangeLog-5.php
http://www.novell.com/linux/security/advisories/2007_15_sr.html
http://bugs.php.net/bug.php?id=40999
http://blog.php-security.org/archives/80-Watching-the-PHP-CVS.html
https://nvd.nist.gov/vuln/detail/CVE-2007-2727
http://cvs.php.net/viewvc.cgi/php-src/ext/mcrypt/mcrypt.c?r1=1.91.2.3.2.9&r2=1.91.2.3.2.10
http://secunia.com/advisories/26895
https://www.mend.io/vulnerability-database/CVE-2007-2727

Severity Score

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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