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Ubuntu: USN-4233-2: GnuTLS update

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Ubuntu: USN-4233-2: GnuTLS update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
01/23/2020
Created
01/25/2020
Added
01/24/2020
Modified
08/05/2020

Description

USN-4233-1 disabled SHA1 being used for digital signature operations in GnuTLS. In certain network environments, certificates using SHA1 may still be in use. This update adds the %VERIFY_ALLOW_BROKEN and %VERIFY_ALLOW_SIGN_WITH_SHA1 priority strings that can be used to temporarily re-enable SHA1 until certificates can be replaced with a stronger algorithm.

Original advisory details:

As a security improvement, this update marks SHA1 as being untrusted for digital signature operations.

Solution(s)

  • ubuntu-upgrade-libgnutls30

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