SUSE SLES16 Security Update : dovecot24 (SUSE-SU-2026:21208-1)

high Nessus Plugin ID 309128

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:21208-1 advisory.

- Update to v2.4.3
- CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins (bsc#1260894).
- CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing (bsc#1260895).
- CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902).
- CVE-2026-24031: SQL injection possible if auth_username_chars is configured empty. Fixed escaping to always happen.
v2.4 regression (bsc#1260896).
- CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).
- CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899).
- CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898).
- CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication (bsc#1260901).
- CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897).
- CVE-2026-27860: LDAP query injection possible if auth_username_chars is configured empty. Fixed escaping to always happen. v2.4 regression (bsc#1260893).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 309128

File Name: suse_SU-2026-21208-1.nasl

Version: 1.1

Type: Local

Agent: unix

Family: SuSE Local Security Checks

Published: 4/22/2026

Updated: 4/22/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: High

Base Score: 7.3

Temporal Score: 5.4

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:P

CVSS Score Source: CVE-2026-24031

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:dovecot24-backend-pgsql, p-cpe:/a:novell:suse_linux:dovecot24-fts, p-cpe:/a:novell:suse_linux:dovecot24-devel, p-cpe:/a:novell:suse_linux:dovecot24-backend-sqlite, p-cpe:/a:novell:suse_linux:dovecot24-backend-mysql, cpe:/o:novell:suse_linux:16, p-cpe:/a:novell:suse_linux:dovecot24, p-cpe:/a:novell:suse_linux:dovecot24-fts-solr

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/16/2026

Vulnerability Publication Date: 3/27/2026

Reference Information

CVE: CVE-2025-59028, CVE-2025-59031, CVE-2025-59032, CVE-2026-24031, CVE-2026-27855, CVE-2026-27856, CVE-2026-27857, CVE-2026-27858, CVE-2026-27859, CVE-2026-27860

SuSE: SUSE-SU-2026:21208-1

Detections

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