Bug 1457122 – CVE-2017-9023 strongswan: Incorrect Handling of CHOICE types in ASN.1 parser and x509 plugin

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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 ...

Status:	CLOSED WONTFIX

Aliases:	CVE-2017-9023

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=moderate,public=20170530,repor...
Keywords:	Security

Depends On:	1457123 1457124
Blocks:	1457125
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Reported:	2017-05-31 03:44 EDT by Andrej Nemec
Modified:	2017-07-06 05:02 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:	strongswan 5.5.3
Doc Type:	If docs needed, set a value
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Last Closed:	2017-07-06 05:02:31 EDT
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Description Andrej Nemec 2017-05-31 03:44:44 EDT

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 03:45:37 EDT

Created strongswan tracking bugs for this issue:

Affects: epel-all [bug 1457123]
Affects: fedora-all [bug 1457124]

Comment 3 Stefan Cornelius 2017-07-06 05:02:31 EDT

Patches:
https://download.strongswan.org/security/CVE-2017-9023/

Comment 4 Stefan Cornelius 2017-07-06 05:02:40 EDT

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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