CVE-2018-7711

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.

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://simplesamlphp.org/security/201803-01	Vendor Advisory
https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d	Patch
https://lists.debian.org/debian-lts-announce/2018/03/msg00017.html	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:simplesamlphp:simplesamlphp:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:simplesamlphp:saml2::::::::
	cpe:2.3:a:simplesamlphp:saml2::::::::
	cpe:2.3:a:simplesamlphp:saml2::::::::

Configuration 3 (hide)

cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

Information

Published : 2018-03-05 14:29

Updated : 2018-03-29 08:24

NVD link : CVE-2018-7711

Mitre link : CVE-2018-7711

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

simplesamlphp

saml2
simplesamlphp

debian

debian_linux

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