Improper access control in PHP - CVE-2015-8838
Published: May 16, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU40284
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-8838
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate data.
ext/mysqlnd/mysqlnd.c in PHP before 5.4.43, 5.5.x before 5.5.27, and 5.6.x before 5.6.11 uses a client SSL option to mean that SSL is optional, which allows man-in-the-middle attackers to spoof servers via a cleartext-downgrade attack, a related issue to CVE-2015-3152.
Affected software
PHP
How to mitigate CVE-2015-8838
Install update from vendor's website.
External References
- http://git.php.net/?p=php-src.git;a=commit;h=97aa752fee61fccdec361279adbfb17a3c60f3f4
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00052.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00056.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00058.html
- http://php.net/ChangeLog-5.php
- http://www.ubuntu.com/usn/USN-2952-1
- http://www.ubuntu.com/usn/USN-2952-2
- https://bugs.php.net/bug.php?id=69669