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MFSA2015-150 Thunderbird: MD5 signatures accepted within TLS 1.2 ServerKeyExchange in server signature (CVE-2015-7575)

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MFSA2015-150 Thunderbird: MD5 signatures accepted within TLS 1.2 ServerKeyExchange in server signature (CVE-2015-7575)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
01/08/2016
Created
07/25/2018
Added
02/17/2016
Modified
11/06/2017

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.

Solution(s)

  • mozilla-thunderbird-upgrade-38_6

References

  • mozilla-thunderbird-upgrade-38_6

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