CVE-2009-1957: Null Pointer Dereference
First published: Mon Jun 08 2009(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| strongSwan | =2.4.3 | |
| strongSwan | =2.5.7 | |
| strongSwan | =2.4.2 | |
| strongSwan | =4.1.8 | |
| strongSwan | =4.1.11 | |
| strongSwan | =2.2.2 | |
| strongSwan | =2.6.16 | |
| strongSwan | =2.5.3 | |
| strongSwan | =2.8.0 | |
| strongSwan | =2.8.1 | |
| strongSwan | =2.4.4 | |
| strongSwan | =2.6.0 | |
| strongSwan | =2.3.0 | |
| strongSwan | =4.1.1 | |
| strongSwan | =4.2.10 | |
| strongSwan | =2.1.0 | |
| strongSwan | =2.1.5 | |
| strongSwan | =2.0.2 | |
| strongSwan | =2.8.8 | |
| strongSwan | =2.8.4 | |
| strongSwan | =4.1.10 | |
| strongSwan | =4.1.4 | |
| strongSwan | =2.6.20 | |
| strongSwan | =4.0.6 | |
| strongSwan | =2.5.1 | |
| strongSwan | =2.3.1 | |
| strongSwan | =2.6.2 | |
| strongSwan | =2.2.1 | |
| strongSwan | =2.4.0 | |
| strongSwan | =4.0.7 | |
| strongSwan | =2.5.5 | |
| strongSwan | =2.8.3 | |
| strongSwan | =2.2.0 | |
| strongSwan | =2.0.1 | |
| strongSwan | =2.1.1 | |
| strongSwan | =4.2.0 | |
| strongSwan | =2.6.1 | |
| strongSwan | =4.2.1 | |
| strongSwan | =4.1.7 | |
| strongSwan | =4.1.6 | |
| strongSwan | =2.7.0 | |
| strongSwan | =2.8.7 | |
| strongSwan | =4.1.5 | |
| strongSwan | =2.4.1 | |
| strongSwan | =4.0.1 | |
| strongSwan | =4.0.3 | |
| strongSwan | =4.0.4 | |
| strongSwan | =2.8.6 | |
| strongSwan | =2.0.0 | |
| strongSwan | =2.5.2 | |
| strongSwan | =2.1.3 | |
| strongSwan | =2.1.2 | |
| strongSwan | =2.6.4 | |
| strongSwan | =2.5.0 | |
| strongSwan | =2.5.6 | |
| strongSwan | =2.5.4 | |
| strongSwan | =4.1.2 | |
| strongSwan | =4.0.0 | |
| strongSwan | =2.4.0a | |
| strongSwan | =4.1.9 | |
| strongSwan | =2.3.2 | |
| strongSwan | =4.0.5 | |
| strongSwan | =2.1.4 | |
| strongSwan | <=4.3.0 | |
| strongSwan | =4.1.0 | |
| strongSwan | =2.8.5 | |
| strongSwan | =4.1.3 | |
| strongSwan | =2.8.2 | |
| strongSwan | =2.6.3 | |
| strongSwan | =4.0.2 |
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Reference Links
- http://download.strongswan.org/CHANGES4.txt
- http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.readme
- http://download.strongswan.org/patches/03_invalid_ike_state_patch/strongswan-4.x.x_invalid_ike_state.patch
- http://secunia.com/advisories/35296
- https://lists.strongswan.org/pipermail/users/2009-May/003457.html
- http://www.securityfocus.com/bid/35178
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
- http://secunia.com/advisories/35685
- http://secunia.com/advisories/36922
- http://www.debian.org/security/2009/dsa-1899
Frequently Asked Questions
What is the severity of CVE-2009-1957?
CVE-2009-1957 is a medium severity vulnerability that can lead to a denial of service due to a NULL pointer dereference in the strongSwan charon daemon.
How do I fix CVE-2009-1957?
To fix CVE-2009-1957, upgrade strongSwan to version 4.3.1 or later, which addresses the vulnerability.
What versions of strongSwan are affected by CVE-2009-1957?
CVE-2009-1957 affects strongSwan versions prior to 4.3.1, specifically 2.0.0 to 4.3.0.
Can CVE-2009-1957 be exploited remotely?
Yes, CVE-2009-1957 can be exploited remotely by sending a specially crafted IKE_SA_INIT request.
What impact does CVE-2009-1957 have on systems?
The impact of CVE-2009-1957 is a denial of service, causing the affected strongSwan service to crash.
- agent/references
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/remedy
- agent/description
- agent/weakness
- agent/severity
- agent/author
- agent/tags
- agent/softwarecombine
- agent/event
- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/strongswan
- canonical/strongswan
- version/strongswan/2.4.3
- version/strongswan/2.5.7
- version/strongswan/2.4.2
- version/strongswan/4.1.8
- version/strongswan/4.1.11
- version/strongswan/2.2.2
- version/strongswan/2.6.16
- version/strongswan/2.5.3
- version/strongswan/2.8.0
- version/strongswan/2.8.1
- version/strongswan/2.4.4
- version/strongswan/2.6.0
- version/strongswan/2.3.0
- version/strongswan/4.1.1
- version/strongswan/4.2.10
- version/strongswan/2.1.0
- version/strongswan/2.1.5
- version/strongswan/2.0.2
- version/strongswan/2.8.8
- version/strongswan/2.8.4
- version/strongswan/4.1.10
- version/strongswan/4.1.4
- version/strongswan/2.6.20
- version/strongswan/4.0.6
- version/strongswan/2.5.1
- version/strongswan/2.3.1
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- version/strongswan/4.0.7
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- version/strongswan/2.1.1
- version/strongswan/4.2.0
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- version/strongswan/4.1.6
- version/strongswan/2.7.0
- version/strongswan/2.8.7
- version/strongswan/4.1.5
- version/strongswan/2.4.1
- version/strongswan/4.0.1
- version/strongswan/4.0.3
- version/strongswan/4.0.4
- version/strongswan/2.8.6
- version/strongswan/2.0.0
- version/strongswan/2.5.2
- version/strongswan/2.1.3
- version/strongswan/2.1.2
- version/strongswan/2.6.4
- version/strongswan/2.5.0
- version/strongswan/2.5.6
- version/strongswan/2.5.4
- version/strongswan/4.1.2
- version/strongswan/4.0.0
- version/strongswan/2.4.0a
- version/strongswan/4.1.9
- version/strongswan/2.3.2
- version/strongswan/4.0.5
- version/strongswan/2.1.4
- version/strongswan/4.3.0
- version/strongswan/4.1.0
- version/strongswan/2.8.5
- version/strongswan/4.1.3
- version/strongswan/2.8.2
- version/strongswan/2.6.3
- version/strongswan/4.0.2