5.9

CVE-2017-12871: simplesamlphp Inadequate Encryption Strength

Modified
AliasesUBUNTU-CVE-2017-12871DEBIAN-CVE-2017-12871
Published 01-09-2017Last modified 05-08-2024

Vulnerability summary

CVE-2017-12871 is a medium (CVSS 5.9) Inadequate Encryption Strength vulnerability in simplesamlphp. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 41.2% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
5.9/10
010
Medium · v3.0 (NVD)
EPSS score
0.49%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 01-09-2017
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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 metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.49%

Chance of exploitation in the next 30 days

Percentile

41%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.49% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • simplesamlphp< 1.14.15-1
Simplesamlphp1 product
  • simplesamlphp1.14.0 | 1.14.1 | 1.14.2 | 1.14.3 | 1.14.4 | 1.14.5 | 1.14.6 | 1.14.7 | 1.14.8 | 1.14.9 | 1.14.10 | 1.14.11
Ubuntu1 product
  • simplesamlphpAll versions (No fix recorded)

3 vendors · 3 products

References

5 links