There is a GnuTLS security advisory [0] regarding "an issue that affects validation of certificates using OCSP responses, which can falsely report a certificate as valid under certain circumstances."
I updated GnuTLS on core-updates to 3.5.4, the latest release of the 3.5 series. For master, the naive approach of cherry-picking the patch [1] did not work; the test 'system-prio-file' fails consistently with that change. I could instead try grafting the updated version. What do you think? The authors seem to think it's a relatively minor issue [2], since exploiting it requires an attacker to compromise the certificate authority. [0] http://gnutls.org/security.html#GNUTLS-SA-2016-3 http://lists.gnutls.org/pipermail/gnutls-devel/2016-September/008146.html [1] https://gitlab.com/gnutls/gnutls/commit/964632f37dfdfb914ebc5e49db4fa29af35b1de9 [2] http://lists.gnutls.org/pipermail/gnutls-devel/2016-September/008148.html
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