CVE-2015-7575
Mozilla Network Security Services (NSS) before 3.20.2, as used in Mozilla Firefox before 43.0.2 and Firefox ESR 38.x before 38.5.2, does not reject MD5 signatures in Server Key Exchange messages in TLS 1.2 Handshake Protocol traffic, which makes it…
Does this matter?
Lower severity and a low EPSS score (2.90%). Track it; it rarely justifies an emergency change on its own.
Description
Mozilla Network Security Services (NSS) before 3.20.2, as used in Mozilla Firefox before 43.0.2 and Firefox ESR 38.x before 38.5.2, does not reject MD5 signatures in Server Key Exchange messages in TLS 1.2 Handshake Protocol traffic, which makes it easier for man-in-the-middle attackers to spoof servers by triggering a collision.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.90% probability · 86th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-19
- Affected
- mozilla/network security services · opensuse/leap · opensuse/opensuse · mozilla/firefox · canonical/ubuntu linux
- Source
- secalert@redhat.com
References
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00038.html
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00041.html
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00042.html
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00043.html
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00045.html
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00047.html
- http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00048.html
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00139.html
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00005.html
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00058.html
- http://lists.opensuse.org/opensuse-updates/2016-01/msg00059.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00007.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00008.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00101.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00166.html
- http://rhn.redhat.com/errata/RHSA-2016-0049.html
- http://rhn.redhat.com/errata/RHSA-2016-0050.html
- http://rhn.redhat.com/errata/RHSA-2016-0053.html
- http://rhn.redhat.com/errata/RHSA-2016-0054.html
- http://rhn.redhat.com/errata/RHSA-2016-0055.html
- http://rhn.redhat.com/errata/RHSA-2016-0056.html
- http://www.debian.org/security/2016/dsa-3436
- http://www.debian.org/security/2016/dsa-3437
- http://www.debian.org/security/2016/dsa-3457
- http://www.debian.org/security/2016/dsa-3458
- http://www.debian.org/security/2016/dsa-3465
- http://www.debian.org/security/2016/dsa-3491
- http://www.debian.org/security/2016/dsa-3688
- http://www.mozilla.org/security/announce/2015/mfsa2015-150.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.