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CVE-2007-1711

MediumPublished

Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables...

Published: Mar 27, 2007
Updated: Aug 7, 2024
Assigning CNA: mitre
Evidence observed: Mar 27, 2007

Primary CVSS

6.8/ 10Medium

nvd · CVSS 2.0

AV:N/AC:M/Au:N/C:P/I:P/A:P

EPSS probability estimate

7.6%

Low · next 30 days

Percentile: 94.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Double free vulnerability in the unserializer in PHP 4.4.5 and 4.4.6 allows context-dependent attackers to execute arbitrary code by overwriting variables pointing to (1) the GLOBALS array or (2) the session data in _SESSION. NOTE: this issue was introduced when attempting to patch CVE-2007-1701 (MOPB-31-2007).

Sources

PHP 4.4.5/4.4.6 - 'session_decode()' Double-Free (PoC)Exploit
Stefan Esser · linux · Mar 27, 2007

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