CVE-2015-6835

Publication date 9 September 2015

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
php5	15.04 vivid	Fixed 5.6.4+dfsg-4ubuntu6.3
	14.04 LTS trusty	Fixed 5.5.9+dfsg-1ubuntu4.13
	12.04 LTS precise	Fixed 5.3.10-1ubuntu3.20

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
php5	Upstream: http://git.php.net/?p=php-src.git;a=commit;h=df4bf28f9f104ca3ef78ed94b497859f15b004e5 Upstream: http://git.php.net/?p=php-src.git;a=commit;h=fc8eff897bd7fe3fed7f6867d2d6a86117a5278d Upstream: http://git.php.net/?p=php-src.git;a=commit;h=9c35f87e9aac29fb8f574f99edc09b344380aef0 Upstream: http://git.php.net/?p=php-src.git;a=commit;h=6290344d96bc31a5c4f682ac5d94d9f30c01d4df Upstream: http://git.php.net/?p=php-src.git;a=commit;h=37c85ebb9469b4411bb5d144e6d9ec525ea552a1

Package

Patch details

php5

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-2758-1
PHP vulnerabilities
30 September 2015

CVE-2015-6835

Cvss 3 Severity Score

Status

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references