FreeBSD : Dovecot -- improper input validation (abaaecda-ea16-43e2-bad0-d34a9ac576b1)

High Nessus Plugin ID 128310

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VPR Score: 7.4

Synopsis

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

Description

Aki Tuomi reports :

Vulnerability Details :

IMAP and ManageSieve protocol parsers do not properly handle NUL byte when scanning data in quoted strings, leading to out of bounds heap memory writes.

Risk :

This vulnerability allows for out-of-bounds writes to objects stored on the heap up to 8096 bytes in pre-login phase, and 65536 bytes post-login phase, allowing sufficiently skilled attacker to perform complicated attacks that can lead to leaking private information or remote code execution. Abuse of this bug is very difficult to observe, as it does not necessarily cause a crash. Attempts to abuse this bug are not directly evident from logs.

Solution

Update the affected packages.

See Also

https://dovecot.org/pipermail/dovecot/2019-August/116874.html

http://www.nessus.org/u?e86e63e0

Plugin Details

Severity: High

ID: 128310

File Name: freebsd_pkg_abaaecdaea1643e2bad0d34a9ac576b1.nasl

Version: 1.3

Type: local

Published: 2019/08/29

Updated: 2019/12/31

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 7.4

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:dovecot, p-cpe:/a:freebsd:freebsd:dovecot-pigeonhole, cpe:/o:freebsd:freebsd

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/08/28

Vulnerability Publication Date: 2019/04/13

Reference Information

CVE: CVE-2019-11500