Debian DSA-4955-1 : libspf2 - security update

critical Nessus Plugin ID 152518

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dsa-4955 advisory.

- Stack buffer overflow in libspf2 versions below 1.2.11 when processing certain SPF macros can lead to Denial of service and potentially code execution via malicious crafted SPF explanation messages.
(CVE-2021-20314)

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

Solution

Upgrade the libspf2 packages.

For the stable distribution (buster), this problem has been fixed in version 1.2.10-7.1~deb10u1.

Plugin Details

Severity: Critical

ID: 152518

File Name: debian_DSA-4955.nasl

Version: 1.4

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 8/12/2021

Updated: 1/20/2022

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2021-20314

CVSS v3

Risk Factor: Critical

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:debian:debian_linux:libmail-spf-xs-perl, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libspf2-2, p-cpe:/a:debian:debian_linux:libspf2-2-dbg, p-cpe:/a:debian:debian_linux:libspf2-dev, p-cpe:/a:debian:debian_linux:spfquery

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 8/11/2021

Vulnerability Publication Date: 8/11/2021

Reference Information

CVE: CVE-2021-20314

Detections

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