Test ID:	1.3.6.1.4.1.25623.1.0.844981
Category:	Ubuntu Local Security Checks
Title:	Ubuntu: Security Advisory (USN-4993-1)
Summary:	The remote host is missing an update for the 'dovecot' package(s) announced via the USN-4993-1 advisory.
Description:	Summary: The remote host is missing an update for the 'dovecot' package(s) announced via the USN-4993-1 advisory. Vulnerability Insight: Kirin discovered that Dovecot incorrectly escaped kid and azp fields in JWT tokens. A local attacker could possibly use this issue to validate tokens using arbitrary keys. This issue only affected Ubuntu 20.10 and Ubuntu 21.04. (CVE-2021-29157) Fabian Ising and Damian Poddebniak discovered that Dovecot incorrectly handled STARTTLS when using the SMTP submission service. A remote attacker could possibly use this issue to inject plaintext commands before STARTTLS negotiation. (CVE-2021-33515) Affected Software/OS: 'dovecot' package(s) on Ubuntu 20.04, Ubuntu 20.10, Ubuntu 21.04. Solution: Please install the updated package(s). CVSS Score: 5.8 CVSS Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-29157 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/ https://security.gentoo.org/glsa/202107-41 https://dovecot.org/security Common Vulnerability Exposure (CVE) ID: CVE-2021-33515 https://lists.debian.org/debian-lts-announce/2022/09/msg00032.html
Copyright	Copyright (C) 2021 Greenbone AG

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