SB2017090112 - Inadequate Encryption Strength in SimpleSAMLphp
Published: September 1, 2017 Updated: August 8, 2020
Security Bulletin ID
SB2017090112
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Inadequate Encryption Strength (CVE-ID: CVE-2017-12871)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
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).
Remediation
Install update from vendor's website.