GitHub Advisory DatabaseGHSA-G888-G2PP-82HFSimpleSAMLphp saml2 incorrect signature validation
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
68.8%
HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the signature validation utilities, allowing an attacker to get invalid signatures accepted as valid by forcing an error during validation. This occurs because of a dependency on PHP functionality that interprets a -1 error code as a true boolean value.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| simplesamlphp | saml2 | * | cpe:2.3:a:simplesamlphp:saml2:*:*:*:*:*:*:*:* |
References
github.com/advisories/GHSA-g888-g2pp-82hf
github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/saml2/CVE-2018-7711.yaml
github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d
lists.debian.org/debian-lts-announce/2018/03/msg00017.html
nvd.nist.gov/vuln/detail/CVE-2018-7711
simplesamlphp.org/security/201803-01
Related
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
68.8%