FreeBSD : cyrus-imapd -- unbounded memory allocation (14908bda-232b-11ef-b621-00155d645102)

medium Nessus Plugin ID 200144

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 14908bda-232b-11ef-b621-00155d645102 advisory.

Cyrus IMAP 3.8.3 Release Notes states:
Fixed CVE-2024-34055: Cyrus-IMAP through 3.8.2 and 3.10.0-beta2 allow authenticated attackers to cause unbounded memory allocation by sending many LITERALs in a single command.
The IMAP protocol allows for command arguments to be LITERALs of negotiated length, and for these the server allocates memory to receive the content before instructing the client to proceed. The allocated memory is released when the whole command has been received and processed.
The IMAP protocol has a number commands that specify an unlimited number of arguments, for example SEARCH.
Each of these arguments can be a LITERAL, for which memory will be allocated and not released until the entire command has been received and processed. This can run a server out of memory, with varying consequences depending on the server's OOM policy.

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

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

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 200144

File Name: freebsd_pkg_14908bda232b11efb62100155d645102.nasl

Version: 1.2

Type: local

Family: FreeBSD Local Security Checks

Published: 6/6/2024

Updated: 6/12/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C

CVSS Score Source: CVE-2024-34055

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:cyrus-imapd38, p-cpe:/a:freebsd:freebsd:cyrus-imapd30, p-cpe:/a:freebsd:freebsd:cyrus-imapd32, p-cpe:/a:freebsd:freebsd:cyrus-imapd36, p-cpe:/a:freebsd:freebsd:cyrus-imapd34, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:cyrus-imapd25

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 6/5/2024

Vulnerability Publication Date: 6/5/2024

Reference Information

CVE: CVE-2024-34055

Detections

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