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Debian DSA-3998-1 : nss - security update

high Nessus Plugin ID 103794

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Synopsis

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

Description

Martin Thomson discovered that nss, the Mozilla Network Security Service library, is prone to a use-after-free vulnerability in the TLS 1.2 implementation when handshake hashes are generated. A remote attacker can take advantage of this flaw to cause an application using the nss library to crash, resulting in a denial of service, or potentially to execute arbitrary code.

Solution

Upgrade the nss packages.

For the oldstable distribution (jessie), this problem has been fixed in version 2:3.26-1+debu8u3.

For the stable distribution (stretch), this problem has been fixed in version 2:3.26.2-1.1+deb9u1.

See Also

https://packages.debian.org/source/jessie/nss

https://packages.debian.org/source/stretch/nss

https://www.debian.org/security/2017/dsa-3998

Plugin Details

Severity: High

ID: 103794

File Name: debian_DSA-3998.nasl

Version: 3.6

Type: local

Agent: unix

Published: 10/12/2017

Updated: 11/19/2025

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2017-7805

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:nss, cpe:/o:debian:debian_linux:8.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/11/2017

Reference Information

CVE: CVE-2017-7805

DSA: 3998