CVE-2017-12871
SimpleSAMLphp Incorrect IV generation for encryption
5.9
MEDIUM
CVSS 3.1
EPSS 0.08%
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).
How to fix CVE-2017-12871
To remediate CVE-2017-12871, upgrade the affected package to a fixed version below.
- —upgrade to 1.14.15-1 or later
- —upgrade to 1.14.12 or later
Is CVE-2017-12871 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.14.15-1
- >= 1.14.0, < 1.14.12
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |