Bug 1457122 (CVE-2017-9023) - CVE-2017-9023 strongswan: Incorrect Handling of CHOICE types in ASN.1 parser and x509 plugin
Summary: CVE-2017-9023 strongswan: Incorrect Handling of CHOICE types in ASN.1 parser ...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2017-9023
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1457123 1457124
Blocks: 1457125
TreeView+ depends on / blocked
 
Reported: 2017-05-31 07:44 UTC by Andrej Nemec
Modified: 2021-02-17 02:06 UTC (History)
3 users (show)

Fixed In Version: strongswan 5.5.3
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Last Closed: 2017-07-06 09:02:31 UTC
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Description Andrej Nemec 2017-05-31 07:44:44 UTC 
It was found that ASN.1 CHOICE types are not correctly handled by the ASN.1 parser when parsing X.509 certificates with extensions that use such types. This could lead to infinite looping of the thread parsing a specifically crafted certificate.

External References:

https://www.strongswan.org/blog/2017/05/30/strongswan-vulnerability-(cve-2017-9023).html
Comment 1 Andrej Nemec 2017-05-31 07:45:37 UTC 
Created strongswan tracking bugs for this issue:

Affects: epel-all [bug 1457123]
Affects: fedora-all [bug 1457124]
Comment 3 Stefan Cornelius 2017-07-06 09:02:31 UTC 
Patches:
https://download.strongswan.org/security/CVE-2017-9023/
Comment 4 Stefan Cornelius 2017-07-06 09:02:40 UTC 
Statement:

Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
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