What’s Vulnerable › Vulnerabilities

CVE-2017-12871

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-09-01 · updated 2026-06-17
• Weakness: CWE-326

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).

Affected products

• simplesamlphp: 1.14.0, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.14.5 (+6)

References

• https://github.com/simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904
• https://simplesamlphp.org/security/201703-02
• https://github.com/simplesamlphp/simplesamlphp/commit/77df6a932d46daa35e364925eb73a175010dc904
• https://simplesamlphp.org/security/201703-02

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