Debian DSA-3421-1 : grub2 - security update

medium Nessus Plugin ID 87428

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Synopsis

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

Description

Hector Marco and Ismael Ripoll, from Cybersecurity UPV Research Group, found an integer underflow vulnerability in Grub2, a popular bootloader. A local attacker can bypass the Grub2 authentication by inserting a crafted input as username or password.

More information:
http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html CVE-2015-8370

Solution

Upgrade the grub2 packages.

For the oldstable distribution (wheezy), this problem has been fixed in version 1.99-27+deb7u3.

For the stable distribution (jessie), this problem has been fixed in version 2.02~beta2-22+deb8u1.

Plugin Details

Severity: Medium

ID: 87428

File Name: debian_DSA-3421.nasl

Version: 2.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/17/2015

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:grub2, cpe:/o:debian:debian_linux:8.0, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/16/2015

Reference Information

CVE: CVE-2015-8370

DSA: 3421

Detections

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