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CVE-2017-12871

Published: Sep 1, 2017Updated: May 13, 2026 Sources: CVE List NVD GHSACWE-326
NVD MITRE
5.9CVSSMEDIUM
EPSS Score
0.5%
Top 62.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

The aesEncrypt method in lib/SimpleSAML/Utils/Crypto.php in SimpleSAMLphp 1.14.x through 1.14.11 makes it easier for context-dependent attackers to bypass the encryption protection mechanism by leveraging use of the first 16 bytes of the secret key as the initialization vector (IV).

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
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:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-326

Affected Products

n/an/a
simplesamlphp/simplesamlphpPackagistOSS Libraries
simplesamlphpsimplesamlphp
Library
OSS Libraries / generic-library
packagistpackage-ecosystemOSS Libraries
simplesamlphposs-projectOSS Librariesaka simplesamlphp, saml2, xml-security

Attack Graph

Products CVE Techniques Tactics

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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

MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://simplesamlphp.org/security/201703-02
simplesamlphp.org
https://github.com/simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904
github.com
https://nvd.nist.gov/vuln/detail/CVE-2017-12871
nvd.nist.gov
and 3 more references View all →

Timeline

Published
Sep 1, 2017
Last Updated
May 13, 2026

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