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: Name: Rob Crittenden (Red Hat)
Created mod_nss tracking bugs for this issue: Affects: fedora-all [bug 1323914]
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2016:2602 https://rhn.redhat.com/errata/RHSA-2016-2602.html