CVE-2009-1958: Medium severity strongSwan Strongswan vulnerability

Published Jun 6, 2009
·
Updated

charon/sa/tasks/childcreate.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKEAUTH request without a (1) TSi or (2) TSr traffic selector.

Affected Software

80 affected components
strongSwan Strongswan=2.4.3
strongSwan Strongswan=2.5.7
strongSwan Strongswan=2.4.2
strongSwan Strongswan=4.1.8
strongSwan Strongswan=4.1.11
strongSwan Strongswan=2.2.2
strongSwan Strongswan=2.6.16
strongSwan Strongswan=2.5.3
strongSwan Strongswan=2.8.0
strongSwan Strongswan=4.2.6
strongSwan Strongswan=2.8.1
strongSwan Strongswan=2.4.4
strongSwan Strongswan=2.6.0
strongSwan Strongswan=2.3.0
strongSwan Strongswan=4.2.12
strongSwan Strongswan=4.1.1
strongSwan Strongswan=4.2.10
strongSwan Strongswan=2.1.0
strongSwan Strongswan=2.1.5
strongSwan Strongswan=2.0.2
strongSwan Strongswan<=4.2.9
strongSwan Strongswan=2.8.8
strongSwan Strongswan=2.8.4
strongSwan Strongswan=4.1.10
strongSwan Strongswan=4.1.4
strongSwan Strongswan=2.6.20
strongSwan Strongswan=4.0.6
strongSwan Strongswan=2.5.1
strongSwan Strongswan=2.3.1
strongSwan Strongswan=2.6.2
strongSwan Strongswan=2.2.1
strongSwan Strongswan=2.4.0
strongSwan Strongswan=4.0.7
strongSwan Strongswan=2.5.5
strongSwan Strongswan=2.8.3
strongSwan Strongswan=2.2.0
strongSwan Strongswan=4.2.3
strongSwan Strongswan=2.0.1
strongSwan Strongswan=4.2.5
strongSwan Strongswan=2.1.1
strongSwan Strongswan=4.2.8
strongSwan Strongswan=4.2.0
strongSwan Strongswan=2.6.1
strongSwan Strongswan=4.2.1
strongSwan Strongswan=4.1.7
strongSwan Strongswan=4.1.6
strongSwan Strongswan=2.7.0
strongSwan Strongswan=2.8.7
strongSwan Strongswan=4.1.5
strongSwan Strongswan=2.4.1
strongSwan Strongswan=4.0.1
strongSwan Strongswan=4.0.3
strongSwan Strongswan=4.2.13
strongSwan Strongswan=4.0.4
strongSwan Strongswan=2.8.6
strongSwan Strongswan=2.0.0
strongSwan Strongswan=2.5.2
strongSwan Strongswan=2.1.3
strongSwan Strongswan=4.2.11
strongSwan Strongswan=4.2.4
strongSwan Strongswan=2.1.2
strongSwan Strongswan=2.6.4
strongSwan Strongswan=2.5.0
strongSwan Strongswan=2.5.6
strongSwan Strongswan=2.5.4
strongSwan Strongswan=4.1.2
strongSwan Strongswan=4.0.0
strongSwan Strongswan=2.4.0a
strongSwan Strongswan=4.1.9
strongSwan Strongswan=4.2.7
strongSwan Strongswan=2.3.2
strongSwan Strongswan=4.2.2
strongSwan Strongswan=4.0.5
strongSwan Strongswan=2.1.4
strongSwan Strongswan=4.1.0
strongSwan Strongswan=2.8.5
strongSwan Strongswan=4.1.3
strongSwan Strongswan=2.8.2
strongSwan Strongswan=2.6.3
strongSwan Strongswan=4.0.2

Remediation

Patch Available

http://download.strongswan.org/patches/04_swapped_ts_check_patch/strongswan-4.x.x._swapped_ts_check.patch

Patch Available

http://download.strongswan.org/patches/04_swapped_ts_check_patch/strongswan-4.x.x._swapped_ts_check.readme

Event History

Jun 6, 2009
CVE Published
via MITRE·06:00 PM
Data Sourced
via MITRE·06:00 PM
Description
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Frequently Asked Questions

1

What is the severity of CVE-2009-1958?

CVE-2009-1958 has the potential to cause a denial of service, which impacts availability.

2

How do I fix CVE-2009-1958?

To fix CVE-2009-1958, upgrade to strongSwan version 4.3.1 or later.

3

Which versions of strongSwan are affected by CVE-2009-1958?

CVE-2009-1958 affects multiple versions of strongSwan prior to 4.3.1 including several versions from 2.0.0 to 4.2.9.

4

What kind of attacks can exploit CVE-2009-1958?

CVE-2009-1958 can be exploited by sending IKE_AUTH requests without proper traffic selectors, causing a denial of service.

5

Is there any workaround for CVE-2009-1958?

There is no known workaround for CVE-2009-1958 other than updating to a patched version of strongSwan.

Company

Resources

Contact

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