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hackeroneTheyarestoneH1:221787
HistoryApr 18, 2017 - 7:35 a.m.

Internet Bug Bounty: Malformed SHA512 ticket DoS (CVE-2016-6302)

2017-04-1807:35:36
theyarestone
hackerone.com
52

EPSS

0.293

Percentile

96.9%

If a server uses SHA512 for TLS session ticket HMAC it is vulnerable to a
DoS attack where a malformed ticket will result in an OOB read which will
ultimately crash.

The use of SHA512 in TLS session tickets is comparatively rare as it requires
a custom server callback and ticket lookup mechanism.

refer:
https://www.openssl.org/news/secadv/20160922.txt