Vulnerability CVE-2017-12868
Published: 2017-09-01

Description:
The secureCompare method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.13 and earlier, when used with PHP before 5.6, allows attackers to conduct session fixation attacks or possibly bypass authentication by leveraging missing character conversions before an XOR operation.

Type:

CWE-384

 (Session Fixation)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Simplesamlphp -> Simplesamlphp 

 References:
https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e
https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html
https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html
https://simplesamlphp.org/security/201705-01
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