strongswan: denial-of-service vulnerability in libtls when processing crafted Key Exchange payload
Published Jan 7, 2015
5.0
MEDIUMCVSS 2.0
EPSS 3.82%
Description
strongSwan 4.5.x through 5.2.x before 5.2.1 allows remote attackers to cause a denial of service (invalid pointer dereference) via a crafted IKEv2 Key Exchange (KE) message with Diffie-Hellman (DH) group 1025.
Affected products
No data.
Configuration 1
- 4.5.0
- 4.5.1
- 4.5.2
- 4.5.3
- 4.6.0
- 4.6.1
- 4.6.2
- 4.6.3
- 4.6.4
- 5.0.0
- 5.0.1
- 5.0.2
- 5.0.3
- 5.0.4
- 5.1.0
- 5.1.1
- 5.1.2
- 5.1.3
- 5.2.0
Configuration 3
- 14.04
- 14.10
Configuration 4
- 21
Configuration 5
- 7.0
No data.
Red Hat Enterprise Linux 7
strongimcv
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | strongimcv | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of strongimcv as shipped with Red Hat Enterprise Linux 7 as they did not include support for strongswan IKEv1/IKEv2.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.82% (0.03823) | 89.74th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.82% (0.03823) | 88.67th | v5 (v2026.06.15) |
| Apr 5, 2026 | 6.86% (0.06861) | 91.34th | v4 (v2025.03.14) |
| Mar 30, 2025 | 7.90% (0.07905) | 91.23th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.43% (0.09432) | 87.89th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.90% (0.07905) | 91.41th | v4 (v2025.03.14) |
| Feb 23, 2025 | 8.15% (0.08149) | 94.44th | v3 (v2023.03.01) |
| Dec 17, 2024 | 11.09% (0.11091) | 95.12th | v3 (v2023.03.01) |
| Aug 19, 2024 | 5.87% (0.05868) | 93.53th | v3 (v2023.03.01) |
| Jul 3, 2024 | 7.79% (0.07792) | 94.26th | v3 (v2023.03.01) |
| Nov 8, 2023 | 8.15% (0.08152) | 93.66th | v3 (v2023.03.01) |
| Mar 7, 2023 | 7.26% (0.07262) | 92.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153825.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2015-01/msg00054.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://secunia.com/advisories/62071 third-party-advisoryx_refsource_SECUNIAPermissions RequiredThird Party Advisory
- http://secunia.com/advisories/62083 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62095 third-party-advisoryx_refsource_SECUNIAPermissions RequiredThird Party Advisory
- http://secunia.com/advisories/62663 third-party-advisoryx_refsource_SECUNIAPermissions RequiredThird Party Advisory
- http://strongswan.org/blog/2015/01/05/strongswan-5.2.2-released.html x_refsource_CONFIRMVendor Advisory
- http://strongswan.org/blog/2015/01/05/strongswan-denial-of-service-vulnerability-%28cve-2014-9221%29.html x_refsource_CONFIRM
- http://www.debian.org/security/2015/dsa-3118 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.securityfocus.com/bid/71894 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2450-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2014-9221 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1173064 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-9221
- https://www.cve.org/CVERecord?id=CVE-2014-9221
- https://www.strongswan.org/blog/2015/01/05/strongswan-denial-of-service-vulnerability-(cve-2014-9221).html
Change history (0)
No recorded changes yet.