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CVE-2017-18122

Published: Feb 2, 2018Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-347
8.1HIGH
NVD MITRE
EPSS Score
1.1%
Top 37.5%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

Description

A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. A SimpleSAMLphp Service Provider using SAML 1.1 will regard as valid any unsigned SAML response containing more than one signed assertion, provided that the signature of at least one of the assertions is valid. Attributes contained in all the assertions received will be merged and the entityID of the first assertion received will be used, allowing an attacker to impersonate any user of any IdP given an assertion signed by the targeted IdP.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-347

Affected Products

simplesamlphp
oss-projectaka xml-security, saml2
simplesamlphpLibrary
OSS Libraries / generic-library
debian
oss-project·GBaka debian gnu/linux
debian linuxOn-premOS
Operating Systems / linux-distro
Packagist
package-ecosystem
simplesamlphp/simplesamlphp
OSS Libraries
and 1 more affected products View all →

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://lists.debian.org/debian-lts-announce/2018/02/msg00008.html
lists.debian.org
https://simplesamlphp.org/security/201710-01
simplesamlphp.org
https://www.debian.org/security/2018/dsa-4127
debian.org
and 4 more references View all →

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