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
Published Sep 1, 2017
5.9
MEDIUMCVSS 3.0
EPSS 1.46%
Description
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.
Affected products
No data.
Configuration 1
- ≤ 1.14.11
Configuration 2
- 7.0
- 8.0
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
AV:N/AC:M/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.46% (0.01459) | 72.63th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.46% (0.01459) | 72.38th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.31% (0.00308) | 70.21th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.31% (0.00308) | 69.12th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.31% (0.00308) | 66.11th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.36% (0.00364) | 67.98th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.05% (0.01046) | 28.66th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.05% (0.01046) | 0.00th | v1 |
References (7)
- https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12872.yaml
- https://github.com/advisories/GHSA-v882-949x-6v28 Advisory
- https://github.com/simplesamlphp/simplesamlphp/commit/b72c79e3070f930d758f5c269333d63ed7509e2e
- https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-12872
- https://simplesamlphp.org/security/201703-01 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2017-12872.yaml | ||
| https://github.com/advisories/GHSA-v882-949x-6v28 | Advisory | |
| https://github.com/simplesamlphp/simplesamlphp/commit/b72c79e3070f930d758f5c269333d63ed7509e2e | ||
| https://lists.debian.org/debian-lts-announce/2017/12/msg00007.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/06/msg00017.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-12872 | ||
| https://simplesamlphp.org/security/201703-01 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.