CVE-2009-4418

The unserialize function in PHP 5.3.0 and earlier allows context-dependent attackers to cause a denial of service (resource consumption) via a deeply nested serialized variable, as demonstrated by a string beginning with a:1: followed by many {a:1: sequences.

CVSS v2.0

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

0.97% chance of exploitation in the next 30 days, 59th percentile

Published

2009-12-24

Updated

2024-09-17

Proof-of-concept exploits (1)

• http://www.suspekt.org/2009/11/28/shocking-news-in-php-exploitation/

References

• CVE Record
• NVD entry

Related

• CVE-2009-4413
• CVE-2009-4421
• CVE-2009-4403
• CVE-2009-4423
• CVE-2009-4386
• CVE-2009-4424