Bug 973996 (CVE-2016-3099) - VUL-1: CVE-2016-3099: apache2-mod_nss: Invalid handling of +CIPHER operator
Summary: VUL-1: CVE-2016-3099: apache2-mod_nss: Invalid handling of +CIPHER operator
Status: RESOLVED FIXED
Alias: CVE-2016-3099
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other openSUSE 42.1
: P5 - None : Normal
Target Milestone: ---
Assignee: Vítězslav Čížek
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/166181/
Whiteboard: CVSSv2:SUSE:CVE-2016-3099:3.3:(AV:L/A...
Keywords:
Depends on:
Blocks:
 
Reported: 2016-04-05 07:49 UTC by Johannes Segitz
Modified: 2016-04-28 06:38 UTC (History)
3 users (show)

See Also:
Found By: Security Response Team
Services Priority:
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Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Johannes Segitz 2016-04-05 07:49:00 UTC 
rh#1319052

It was reported that +CIPHER operator in OpenSSL changes the order of a cipher. Since cipher ordering isn't supported in NSS, the mod_nss code was supposed to return an error. Instead it returned the result of processing up to that point. Default OpenSSL cipher string:

!SSLv2:kEECDH:kRSA:kEDH:kPSK:+3DES:!aNULL:!eNULL:!MD5:!EXP:!RC4:!SEED:!IDEA:!DES

Would not properly exclude anything because only the first 5 elements would be examined.

Acknowledgments: Rob Crittenden (Red Hat)

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1319052
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-3099
Comment 1 Vítězslav Čížek 2016-04-05 08:26:16 UTC 
Only Factory is affected.
Other distributions have mod_nss 1.0.8, which doesn't support openssl style cipherlist.
(The feature was added in 1.0.11)
Comment 2 Vítězslav Čížek 2016-04-16 10:18:34 UTC 
Factory package updated to 1.0.14.
Comment 3 Bernhard Wiedemann 2016-04-19 09:00:12 UTC 
This is an autogenerated message for OBS integration:
This bug (973996) was mentioned in
https://build.opensuse.org/request/show/390637 Factory / apache2-mod_nss