MEDIUM
charon/sa/ike_sa.c in the charon daemon in strongSWAN before 4.3.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an invalid IKE_SA_INIT request that triggers "an incomplete state," followed by a CREATE_CHILD_SA request
Published Jun 6, 2009
5.0
MEDIUMCVSS 2.0
EPSS 2.95%
Description
charon/sa/ike_sa.c in the charon daemon in strongSWAN before 4.3.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an invalid IKE_SA_INIT request that triggers "an incomplete state," followed by a CREATE_CHILD_SA request.
Affected products
No data.
OR
- ≤ 4.3.0
- 2.0.0
- 2.0.1
- 2.0.2
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.5
- 2.2.0
- 2.2.1
- 2.2.2
- 2.3.0
- 2.3.1
- 2.3.2
- 2.4.0
- 2.4.0a
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.5.0
- 2.5.1
- 2.5.2
- 2.5.3
- 2.5.4
- 2.5.5
- 2.5.6
- 2.5.7
- 2.6.0
- 2.6.1
- 2.6.2
- 2.6.3
- 2.6.4
- 2.6.16
- 2.6.20
- 2.7.0
- 2.8.0
- 2.8.1
- 2.8.2
- 2.8.3
- 2.8.4
- 2.8.5
- 2.8.6
- 2.8.7
- 2.8.8
- 4.0.0
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.0.5
- 4.0.6
- 4.0.7
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.1.6
- 4.1.7
- 4.1.8
- 4.1.9
- 4.1.10
- 4.1.11
- 4.2.0
- 4.2.1
- 4.2.10
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.95% 0.02947
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.02947
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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.95% (0.02947) | 86.69th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.95% (0.02947) | 85.32th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.74% (0.01736) | 81.23th | v4 (v2025.03.14) |
| Dec 17, 2024 | 12.94% (0.12936) | 95.49th | v3 (v2023.03.01) |
| Dec 12, 2024 | 8.35% (0.08354) | 94.67th | v3 (v2023.03.01) |
| May 13, 2024 | 7.79% (0.07792) | 94.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 10.62% (0.10623) | 94.09th | 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) |
Weaknesses (1)
References (10)
- http://download.strongswan.org/CHANGES4.txt x_refsource_CONFIRMPatch
- http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.patch x_refsource_CONFIRMPatch
- http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.readme x_refsource_CONFIRMVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/35296 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35685 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/36922 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2009/dsa-1899 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/35178 vdb-entryx_refsource_BID
- https://lists.strongswan.org/pipermail/users/2009-May/003457.html mailing-listx_refsource_MLIST
| Link | Providers | Tags |
|---|---|---|
| http://download.strongswan.org/CHANGES4.txt | x_refsource_CONFIRMPatch | |
| http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.patch | x_refsource_CONFIRMPatch | |
| http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.readme | x_refsource_CONFIRMVendor Advisory | |
| http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html | vendor-advisoryx_refsource_SUSE | |
| http://secunia.com/advisories/35296 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/35685 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/36922 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2009/dsa-1899 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/35178 | vdb-entryx_refsource_BID | |
| https://lists.strongswan.org/pipermail/users/2009-May/003457.html | mailing-listx_refsource_MLIST |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 6, 2009
Updated Aug 7, 2024
Reserved Jun 6, 2009
Link CVE-2009-1957
CISA Vulnrichment
Updated n/a