GoogleOSV:GHSA-J96G-47X2-46HVSimpleSAMLphp Session fixation issue and authentication bypass in the authcrypt module
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
Low
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
72.0%
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| simplesamlphp/simplesamlphp | eq | 1.14.12 | |
| simplesamlphp/simplesamlphp | eq | 1.14.13 |
References
github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12868.yaml
github.com/simplesamlphp/simplesamlphp
github.com/simplesamlphp/simplesamlphp/commit/4bc629658e7b7d17c9ac3fe0da7dc5df71f1b85e
lists.debian.org/debian-lts-announce/2017/12/msg00007.html
lists.debian.org/debian-lts-announce/2018/06/msg00017.html
nvd.nist.gov/vuln/detail/CVE-2017-12868
simplesamlphp.org/security/201705-01
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.3 High
AI Score
Confidence
Low
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
72.0%