vulnerability
Ubuntu: USN-4384-1 (CVE-2020-13777): GnuTLS vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Jun 4, 2020 | Jun 6, 2020 | Mar 22, 2023 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Jun 4, 2020
Added
Jun 6, 2020
Modified
Mar 22, 2023
Description
GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.
Solution
ubuntu-upgrade-libgnutls30
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