MEDIUM
openswan: use-after-free vulnerability leads to DoS
Published Nov 17, 2011
4.0
MEDIUMCVSS 2.0
EPSS 2.09%
Description
Use-after-free vulnerability in the cryptographic helper handler functionality in Openswan 2.3.0 through 2.6.36 allows remote authenticated users to cause a denial of service (pluto IKE daemon crash) via vectors related to the (1) quick_outI1_continue and (2) quick_outI1 functions.
Affected products
No data.
OR
- 2.3.0
- 2.3.1
- 2.4.0
- 2.4.1
- 2.4.2
- 2.4.3
- 2.4.4
- 2.4.5
- 2.4.6
- 2.4.7
- 2.4.8
- 2.4.9
- 2.4.10
- 2.4.11
- 2.4.12
- 2.4.13
- 2.5.0
- 2.5.0
- 2.5.0
- 2.5.01
- 2.5.02
- 2.5.03
- 2.5.04
- 2.5.05
- 2.5.06
- 2.5.07
- 2.5.08
- 2.5.09
- 2.5.10
- 2.5.11
- 2.5.12
- 2.5.13
- 2.5.14
- 2.5.15
- 2.5.16
- 2.5.17
- 2.5.18
- 2.6.01
- 2.6.02
- 2.6.03
- 2.6.04
- 2.6.05
- 2.6.06
- 2.6.07
- 2.6.08
- 2.6.09
- 2.6.10
- 2.6.11
- 2.6.12
- 2.6.13
- 2.6.14
- 2.6.15
- 2.6.16
- 2.6.17
- 2.6.18
- 2.6.19
- 2.6.20
- 2.6.21
- 2.6.22
- 2.6.23
- 2.6.24
- 2.6.25
- 2.6.26
- 2.6.27
- 2.6.28
- 2.6.29
- 2.6.30
- 2.6.31
- 2.6.32
- 2.6.33
- 2.6.34
- 2.6.35
- 2.6.36
No data.
Red Hat Enterprise Linux 5
openswan-0:2.6.21-5.el5_7.6
Fixed · RHSA-2011:1422
Red Hat Enterprise Linux 6
openswan-0:2.6.32-4.el6_1.4
Fixed · RHSA-2011:1422
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | openswan-0:2.6.21-5.el5_7.6 | Fixed | RHSA-2011:1422 |
| Red Hat Enterprise Linux 6 | openswan-0:2.6.32-4.el6_1.4 | Fixed | RHSA-2011:1422 |
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.
4.0 MEDIUM NVD
AV:N/AC:L/Au:S/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication Single
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.
2.09% 0.02086
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02086
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 1, 2026 | 2.09% (0.02086) | 80.88th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.17% (0.02165) | 79.81th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.25% (0.01246) | 77.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.02% (0.01024) | 84.48th | v3 (v2023.03.01) |
| Apr 5, 2024 | 1.02% (0.01024) | 83.50th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.02% (0.01024) | 81.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.31% (0.01315) | 68.50th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.31% (0.01315) | 68.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.31% (0.01315) | 66.08th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.31% (0.01315) | 41.88th | v2 (v2022.01.01) |
Weaknesses (2)
References (13)
- http://openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt
- http://secunia.com/advisories/46678 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/46681 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/47342 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.debian.org/security/2011/dsa-2374 vendor-advisoryx_refsource_DEBIAN
- http://www.openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt x_refsource_CONFIRM
- http://www.redhat.com/support/errata/RHSA-2011-1422.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/50440 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1026268 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2011-4073 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=748961 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-4073
- https://www.cve.org/CVERecord?id=CVE-2011-4073
| Link | Providers | Tags |
|---|---|---|
| http://openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt | ||
| http://secunia.com/advisories/46678 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/46681 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/47342 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.debian.org/security/2011/dsa-2374 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt | x_refsource_CONFIRM | |
| http://www.redhat.com/support/errata/RHSA-2011-1422.html | vendor-advisoryx_refsource_REDHAT | |
| http://www.securityfocus.com/bid/50440 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id?1026268 | vdb-entryx_refsource_SECTRACK | |
| https://access.redhat.com/security/cve/CVE-2011-4073 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=748961 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-4073 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-4073 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 17, 2011
Updated Aug 6, 2024
Reserved Oct 18, 2011
Link CVE-2011-4073
CISA Vulnrichment
Updated n/a