Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2017-12868

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.

Published

2017-09-01T13:29:00.240

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-384

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	simplesamlphp	simplesamlphp	≤ 1.14.13	Yes
Application	php	php	≤ 5.5.38	No

References

https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e Issue Tracking, Patch, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html ([email protected])
https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html ([email protected])
https://simplesamlphp.org/security/201705-01 Patch, Vendor Advisory ([email protected])
https://github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html (af854a3a-2127-422b-91ae-364da2661108)
https://simplesamlphp.org/security/201705-01 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)