CVE-2024-34055

Publication date 5 June 2024

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Cyrus IMAP before 3.8.3 and 3.10.x before 3.10.0-rc1 allows authenticated attackers to cause unbounded memory allocation by sending many LITERALs in a single command.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
cyrus-imapd-2.4	25.10 questing	Not in release
	25.04 plucky	Not in release
	24.10 oracular	Not in release
	24.04 LTS noble	Not in release
	23.10 mantic	Not in release
	22.04 LTS jammy	Not in release
	20.04 LTS focal	Not in release
	16.04 LTS xenial	Ignored changes too intrusive
cyrus-imapd	25.10 questing	Not affected
	25.04 plucky	Not affected
	24.10 oracular	Not affected
	24.04 LTS noble	Fixed 3.8.2-1ubuntu0.1~esm1
	23.10 mantic	Ignored end of life, was needed
	22.04 LTS jammy	Fixed 3.4.3-3ubuntu0.1+esm1
	20.04 LTS focal	Ignored changes too intrusive
	18.04 LTS bionic	Ignored changes too intrusive

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Notes

octagalland

Debian deemed the fix for this vulnerability as too intrusive to backport for versions 3.2 and 3.0

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H