CVE-2016-3099
First published: Fri Mar 18 2016(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux HPC Node | =7.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1323914
- https://rhn.redhat.com/errata/RHSA-2016-2602.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1319052
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183102.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183129.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184345.html
- http://rhn.redhat.com/errata/RHSA-2016-2602.html
Frequently Asked Questions
What is the severity of CVE-2016-3099?
CVE-2016-3099 has been classified with a moderate severity level.
How do I fix CVE-2016-3099?
To mitigate CVE-2016-3099, users should update their OpenSSL packages to the latest version provided by their distribution.
Which systems are affected by CVE-2016-3099?
CVE-2016-3099 affects Red Hat Enterprise Linux Desktop, HPC Node, Server, and Workstation, all at version 7.0.
What exploit is associated with CVE-2016-3099?
CVE-2016-3099 allows for a situation where the processing of ciphers may continue incorrectly due to a flaw in mod_nss.
Is CVE-2016-3099 still a concern in newer releases?
CVE-2016-3099 is primarily a concern for Red Hat Enterprise Linux 7.0 users, and later releases may not be affected if they have applied necessary patches.
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