Debian Security Advisory DSA gnutls28

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Debian security advisory DSA gnutls28.

A flaw was reported in the TLS session ticket key construction in GnuTLS, a library implementing the TLS and SSL protocols.

Debian security advisory DSA gnutls28.

Package: gnutls28
CVE ID: CVE-2020-13777
Debian Bug: 962289

A flaw was reported in the TLS session ticket key construction in GnuTLS, a library implementing the TLS and SSL protocols.

The flaw caused the TLS server to not securely construct a session ticket encryption key considering the application supplied secret, allowing a man-in-the-middle attacker to bypass authentication in TLS 1.3 and recover previous conversations in TLS 1.2.

For the stable distribution Debian 10 "Buster", this problem has been fixed in version 3.6.7-4+deb10u4.

We recommend that you upgrade your gnutls28 packages.

For the detailed security status of gnutls28 please refer to its security tracker page.

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