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Bug 1325965 - (CVE-2016-4008) CVE-2016-4008 libtasn1: infinite loop while parsing DER certificates
CVE-2016-4008 libtasn1: infinite loop while parsing DER certificates
Status: CLOSED WONTFIX
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20160411,repor...
: Security
Depends On: 1325968 1325969 1325970
Blocks: 1325972
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Reported: 2016-04-11 09:49 EDT by Andrej Nemec
Modified: 2016-05-09 04:35 EDT (History)
22 users (show)

See Also:
Fixed In Version: libtasn1 4.8
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2016-05-09 04:35:33 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Andrej Nemec 2016-04-11 09:49:46 EDT 
The libtasn1 library, in its 4.7 version, can loop for a long time or indefinitely when it is used to parse DER representations of X509 certificates, leading to a denial of service. Some of these loops may in addition increase heap or stack usage, leading to more issues.

References (with reproducer):

http://seclists.org/oss-sec/2016/q2/51
Comment 1 Andrej Nemec 2016-04-11 09:51:19 EDT 
Created libtasn1 tracking bugs for this issue:

Affects: fedora-all [bug 1325968]
Comment 2 Andrej Nemec 2016-04-11 09:51:32 EDT 
Created mingw-libtasn1 tracking bugs for this issue:

Affects: fedora-all [bug 1325969]
Affects: epel-7 [bug 1325970]
Comment 3 Andrej Nemec 2016-04-13 10:26:17 EDT 
CVE assignment:

http://seclists.org/oss-sec/2016/q2/66
Comment 4 Fedora Update System 2016-04-14 23:18:02 EDT 
libtasn1-4.8-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2016-04-21 21:24:53 EDT 
libtasn1-4.8-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2016-04-27 18:20:51 EDT 
libtasn1-4.8-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
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