Debian DSA-3793-1 : shadow - security update

high Nessus Plugin ID 97397

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Synopsis

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

Description

Several vulnerabilities were discovered in the shadow suite. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2016-6252 An integer overflow vulnerability was discovered, potentially allowing a local user to escalate privileges via crafted input to the newuidmap utility.

- CVE-2017-2616 Tobias Stoeckmann discovered that su does not properly handle clearing a child PID. A local attacker can take advantage of this flaw to send SIGKILL to other processes with root privileges, resulting in denial of service.

Solution

Upgrade the shadow packages.

For the stable distribution (jessie), these problems have been fixed in version 1:4.2-3+deb8u3.

Plugin Details

Severity: High

ID: 97397

File Name: debian_DSA-3793.nasl

Version: 3.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/27/2017

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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:shadow, 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: 2/24/2017

Reference Information

CVE: CVE-2016-6252, CVE-2017-2616

DSA: 3793

Detections

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