ipsilon: DoS via logging out all open SAML2 sessions
Published Jul 12, 2017
9.1
CRITICALCVSS 3.0
EPSS 2.14%
Description
A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users. This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a "SAML2 multi-session vulnerability."
Affected products
No data.
- 1.0.0
- 1.0.1
- 1.0.2
- 1.1.0
- 1.1.1
- 1.2.0
- 2.0.0
- 2.0.1
No data.
Red Hat Enterprise Linux 7
ipsilon-0:1.0.0-13.el7_3
Fixed · RHSA-2016:2809
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | ipsilon-0:1.0.0-13.el7_3 | Fixed | RHSA-2016:2809 |
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:L/PR:N/UI:N/S:U/C:H/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
AV:N/AC:L/Au:N/C:P/I:N/A:P
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 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.14% (0.02136) | 81.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.12% (0.02119) | 79.39th | v5 (v2026.06.15) |
| Mar 30, 2025 | 7.14% (0.07142) | 90.69th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.30% (0.12303) | 89.75th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.14% (0.07142) | 90.90th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.83% (0.00830) | 82.68th | v3 (v2023.03.01) |
| Apr 10, 2024 | 0.83% (0.00830) | 81.71th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.83% (0.00830) | 79.69th | v3 (v2023.03.01) |
| May 22, 2023 | 1.36% (0.01356) | 84.18th | v3 (v2023.03.01) |
| May 8, 2023 | 1.01% (0.01015) | 81.51th | v3 (v2023.03.01) |
| Apr 27, 2023 | 0.68% (0.00678) | 76.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.96% (0.00960) | 80.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Feb 13, 2023 | 1.11% (0.01108) | 54.62th | v2 (v2022.01.01) |
| Feb 3, 2023 | 1.54% (0.01537) | 73.85th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (16)
- http://rhn.redhat.com/errata/RHSA-2016-2809.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/94439 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2016:2809
- https://access.redhat.com/security/cve/CVE-2016-8638 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1392829 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8638 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://github.com/advisories/GHSA-376m-3rm2-9jm6 Advisory
- https://github.com/ipsilon-project/ipsilon/commit/1c48414877fc110652b6078a29529972c7ec9122
- https://github.com/ipsilon-project/ipsilon/commit/64fc366c054fc6af1d9d2692902db169884b5f78
- https://github.com/ipsilon-project/ipsilon/commit/a33303b6beb5c316d7c18b23566b7666a4e307a4
- https://github.com/ipsilon-project/ipsilon/commit/b4744a92d4fa7f6d7ade0ae2d99a2dc0ea94734d
- https://ipsilon-project.org/advisory/CVE-2016-8638.txt x_refsource_CONFIRMVendor Advisory
- https://ipsilon-project.org/release/2.1.0.html x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2016-8638
- https://pagure.io/ipsilon/c/511fa8b7001c2f9a42301aa1d4b85aaf170a461c x_refsource_CONFIRMPatchVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-8638
Change history (0)
No recorded changes yet.