Use-after-free error in PHP - CVE-2015-0273

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to multiple use-after-free vulnerabilities in ext/date/php_date.c in PHP before 5.4.38, 5.5.x before 5.5.22, and 5.6.x before 5.6.6. A remote attacker can trigger memory corruption via crafted serialized input containing a (1) R or (2) r type specifier in (a) DateTimeZone data handled by the php_date_timezone_initialize_from_hash function or (b) DateTime data handled by the php_date_initialize_from_hash function and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

How to mitigate CVE-2015-0273

Links to Public Exploits and PoC-codes

• Exploit #2560 - PHP DateTime - Use-After-Free (April 7, 2020)

External References

• https://bugs.php.net/bug.php?id=68942

Related Security Bulletins

• Ubuntu update for PHP
• Fedora 21 update for php