Bug 2452172 (CVE-2025-59032) - CVE-2025-59032 dovecot: ManageSieve: Denial of Service via crafted SASL initial response in AUTHENTICATE command
Summary: CVE-2025-59032 dovecot: ManageSieve: Denial of Service via crafted SASL initi...
Keywords:
Status: NEW
Alias: CVE-2025-59032
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-27 09:01 UTC by OSIDB Bzimport
Modified: 2026-03-30 11:01 UTC (History)
0 users

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Description OSIDB Bzimport 2026-03-27 09:01:56 UTC 
ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response. This can be used to crash ManageSieve service repeatedly, making it unavailable for other users. Control access to ManageSieve port, or disable the service if it's not needed. Alternatively upgrade to a fixed version. No publicly available exploits are known.
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