CVE-2017-12872 json
SimpleSAMLphp allows timing side-channel attacks
published 2017-09-01 9 y ago modified 2026-06-17 4 mo ago also GHSA-v882-949x-6v28 , EUVD-2022-5314
- cvss
- 5.9
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
Summary
The (1) Htpasswd authentication source in the authcrypt module and (2) SimpleSAML_Session class in SimpleSAMLphp 1.14.11 and earlier allow remote attackers to conduct timing side-channel attacks by leveraging use of the standard comparison operator to compare secret material against user input.
Patch / fix
- packagist simplesamlphp/simplesamlphp 1.15.0-rc1
- simplesamlphp Debian 14, Debian 12 1.14.15-1
debian advisories DEBIAN-CVE-2017-12872
Exploit prediction
1.46% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| GitHub | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | simplesamlphp/simplesamlphp | <1.15.0-rc1 |
1.15.0-rc1 |
Classification
- Weakness
-
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
References
-
simplesamlphp.org
/security/201703-01
web, patch, vendor-advisory
-
github.com
/simplesamlphp/simplesamlphp/commit/b72c79e3070f930d758f5c269333d63ed7509e2e
web
-
lists.debian.org
/debian-lts-announce/2017/12/msg00007.html
mailing-list, web, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2018/06/msg00017.html
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2017-12872
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12872.yaml
web
Sources
- CVE List CVE-2017-12872
- GitHub Advisory GHSA-v882-949x-6v28
- NVD CVE-2017-12872
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.