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SUSE: Security Advisory (SUSE-SU-2021:2891-1)

Information

Severity

Severity

Medium

Family

Family

SuSE Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.8

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

2 years ago

Modified

Modified

2 years ago

Summary

The remote host is missing an update for the 'dovecot23' package(s) announced via the SUSE-SU-2021:2891-1 advisory.

Insight

Insight

This update for dovecot23 fixes the following issues: Update dovecot to version 2.3.15 (jsc#SLE-19970): Security issues fixed: CVE-2021-29157: Dovecot does not correctly escape kid and azp fields in JWT tokens. This may be used to supply attacker controlled keys to validate tokens, if attacker has local access. (bsc#1187418) Local attacker can login as any user and access their emails CVE-2021-33515: On-path attacker could have injected plaintext commands before STARTTLS negotiation that would be executed after STARTTLS finished with the client. (bsc#1187419) Attacker can potentially steal user credentials and mails Disconnection log messages are now more standardized across services. They also always now start with 'Disconnected' prefix. Dovecot now depends on libsystemd for systemd integration. Removed support for Lua 5.2. Use version 5.1 or 5.3 instead. config: Some settings are now marked as 'hidden'. It's discouraged to change these settings. They will no longer be visible in doveconf output, except if they have been changed or if doveconf -s parameter is used. See [link moved to references] for details. imap-compress: Compression level is now algorithm specific. See [link moved to references] indexer-worker: Convert 'Indexed' info logs to an event named 'indexer_worker_indexing_finished'. See [link moved to references] g-finished Add TSLv1.3 support to min_protocols. Allow configuring ssl_cipher_suites. (for TLSv1.3+) acl: Add acl_ignore_namespace setting which allows to entirely ignore ACLs for the listed namespaces. imap: Support official RFC8970 preview/snippet syntax. Old methods of retrieving preview information via IMAP commands ('SNIPPET and PREVIEW with explicit algorithm selection') have been deprecated. imapc: Support INDEXPVT for imapc storage to enable private message flags for cluster wide shared mailboxes. lib-storage: Add new events: mail_opened, mail_expunge_requested, mail_expunged, mail_cache_lookup_finished. See [link moved to references] zlib, imap-compression, fs-compress: Support compression levels that the algorithm supports. Before, we would allow hardcoded value between 1 to 9 and would default to 6. Now we allow using per-algorithm value range and default to whatever default the algorithm specifies. *-login: Commands pipelined together with and just after the authenticate command cause these commands to be executed twice. This applies to all protocols that involve user login, which currently comprises of imap, pop3, submisision and managesieve. *-login: Processes are supposed to disconnect the oldest non-logged in connection when process_limit was reached. This didn't actually happen with the default 'high-security mode' (with service_count=1) where each connection is ... [Please see the references for more information on the vulnerabilities]

Affected Software

Affected Software

'dovecot23' package(s) on SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, SUSE Linux Enterprise High Performance Computing 15-SP1, SUSE Linux Enterprise Server 15-SP1, SUSE Linux Enterprise Server for SAP 15-SP1, SUSE Manager Proxy 4.0, SUSE Manager Retail Branch Server 4.0, SUSE Manager Server 4.0.

Detection Method

Detection Method

Checks if a vulnerable package version is present on the target host.

Solution

Solution

Please install the updated package(s).

Common Vulnerabilities and Exposures (CVE)