Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | 5.6.0 |
References
- http://php.net/ChangeLog-5.php
- http://www.debian.org/security/2015/dsa-3358
- http://www.securityfocus.com/bid/76734
- http://www.securitytracker.com/id/1033548
- https://bugs.php.net/bug.php?id=70219
- https://security.gentoo.org/glsa/201606-10
- http://php.net/ChangeLog-5.php
- http://www.debian.org/security/2015/dsa-3358
- http://www.securityfocus.com/bid/76734
- http://www.securitytracker.com/id/1033548
- https://bugs.php.net/bug.php?id=70219
- https://security.gentoo.org/glsa/201606-10
FAQ
What is CVE-2015-6835?
CVE-2015-6835 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 cau...
How severe is CVE-2015-6835?
CVE-2015-6835 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2015-6835?
Check the references section above for vendor advisories and patch information. Affected products include: Php Php.