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

critical Nessus Plugin ID 128310

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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.

Plugin Details

Severity: Critical

ID: 128310

File Name: freebsd_pkg_abaaecdaea1643e2bad0d34a9ac576b1.nasl

Version: 1.4

Type: local

Family: FreeBSD Local Security Checks

Published: 8/29/2019

Updated: 4/30/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2019-11500

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/28/2019

Vulnerability Publication Date: 4/13/2019

Reference Information

CVE: CVE-2019-11500

Detections

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