The Internet Key Exchange version 1 (IKEv1) implementation in Openswan 2 (openswan-2) before 2.4.4, and freeswan in SUSE LINUX 9.1 before 2.04_1.5.4-1.23, allow remote attackers to cause a denial of service via (1) a crafted packet using 3DES with an invalid key length, or (2) unspecified inputs when Aggressive Mode is enabled and the PSK is known, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1
Published Nov 18, 2005
7.8
HIGHCVSS 2.0
EPSS 7.45%
Description
The Internet Key Exchange version 1 (IKEv1) implementation in Openswan 2 (openswan-2) before 2.4.4, and freeswan in SUSE LINUX 9.1 before 2.04_1.5.4-1.23, allow remote attackers to cause a denial of service via (1) a crafted packet using 3DES with an invalid key length, or (2) unspecified inputs when Aggressive Mode is enabled and the PSK is known, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.
Affected products
No data.
- 2.04
- 2.1.1
- 2.1.2
- 2.1.4
- 2.1.5
- 2.1.6
- 2.2
- 2.3
- 2.4.0
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:C
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.45% (0.07453) | 94.27th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.45% (0.07453) | 93.65th | v5 (v2026.06.15) |
| Aug 29, 2025 | 6.72% (0.06721) | 90.89th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.47% (0.10474) | 92.68th | v4 (v2025.03.14) |
| Dec 17, 2024 | 3.19% (0.03193) | 90.96th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.45% (0.05450) | 91.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
No CWE recorded.
References (17)
- http://archives.neohapsis.com/archives/bugtraq/2005-12/0138.html mailing-listx_refsource_BUGTRAQ
- http://archives.neohapsis.com/archives/bugtraq/2005-12/0161.html mailing-listx_refsource_BUGTRAQ
- http://jvn.jp/niscc/NISCC-273756/index.html x_refsource_MISC
- http://secunia.com/advisories/17581 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/17680 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/17980 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/18115 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1015214 vdb-entryx_refsource_SECTRACK
- http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/ x_refsource_MISCExploit
- http://www.gentoo.org/security/en/glsa/glsa-200512-04.xml vendor-advisoryx_refsource_GENTOO
- http://www.kb.cert.org/vuls/id/226364 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.niscc.gov.uk/niscc/docs/re-20051114-01014.pdf?lang=en x_refsource_MISCVendor Advisory
- http://www.novell.com/linux/security/advisories/2005_70_ipsec.html vendor-advisoryx_refsource_SUSE
- http://www.openswan.org/niscc2/ x_refsource_CONFIRMPatchVendor Advisory
- http://www.redhat.com/archives/fedora-announce-list/2005-November/msg00057.html vendor-advisoryx_refsource_FEDORA
- http://www.redhat.com/archives/fedora-announce-list/2005-November/msg00058.html vendor-advisoryx_refsource_FEDORA
- http://www.securityfocus.com/bid/15416 vdb-entryx_refsource_BIDPatch
Change history (0)
No recorded changes yet.