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prionPRIOn knowledge basePRION:CVE-2015-4000
HistoryMay 21, 2015 - 12:59 a.m.

Code injection

2015-05-2100:59:00
PRIOn knowledge base
www.prio-n.com
18

6.8 Medium

AI Score

Confidence

Low

0.974 High

EPSS

Percentile

99.9%

The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then rewriting a ServerHello with DHE_EXPORT replaced by DHE, aka the “Logjam” issue.

References