MozillaCVELIST:CVE-2015-2721CVE-2015-2721
Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a “SMACK SKIP-TLS” issue.
References
lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html
lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html
lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html
lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
rhn.redhat.com/errata/RHSA-2015-1185.html
rhn.redhat.com/errata/RHSA-2015-1664.html
www.debian.org/security/2015/dsa-3324
www.debian.org/security/2015/dsa-3336
www.mozilla.org/security/announce/2015/mfsa2015-71.html
www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
www.securityfocus.com/bid/75541
www.securityfocus.com/bid/83398
www.securityfocus.com/bid/91787
www.securitytracker.com/id/1032783
www.securitytracker.com/id/1032784
www.ubuntu.com/usn/USN-2656-1
www.ubuntu.com/usn/USN-2656-2
www.ubuntu.com/usn/USN-2672-1
www.ubuntu.com/usn/USN-2673-1
bugzilla.mozilla.org/show_bug.cgi?id=1086145
developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19_release_notes
security.gentoo.org/glsa/201512-10
security.gentoo.org/glsa/201701-46
smacktls.com
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