Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory. Attacker can force managesieve-login to be unavailable by repeatedly crashing the process. Protect access to managesieve protocol, or install fixed version. No publicly available exploits are known.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDovecot
APPDovecot< 2.4.3Open Xchange Dovecot
APPOpen-Xchange< 2.3.22.13.0.0 β 3.0.5 (bez)3.1.0 β 3.1.4 (bez)
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