CVE-2015-7575

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-01-09 · updated 2026-10-14
Weakness: CWE-19

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.

Affected products

Canonical Ubuntu Linux: 14.04, 15.04, 15.10
Mozilla Firefox: through 43.0.1; 38.0, 38.0.1, 38.0.5, 38.1.0, 38.1.1, 38.2.0 (+5)
Mozilla Network Security Services: through 3.20.1
openSUSE Leap: 42.1
Opensuse: 13.1, 13.2

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

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