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Ubuntu 14.04 LTS : GRUB vulnerability (USN-2836-1)

critical Nessus Plugin ID 87408

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 14.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-2836-1 advisory.

 Hector Marco and Ismael Ripoll discovered that GRUB incorrectly handled the backspace key when configured to use authentication. A local attacker could use this issue to bypass GRUB password protection.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-2836-1

Plugin Details

Severity: Critical

ID: 87408

File Name: ubuntu_USN-2836-1.nasl

Version: 2.11

Type: local

Agent: unix

Published: 12/16/2015

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS Score Source: CVE-2015-8370

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:canonical:ubuntu_linux:grub-emu, p-cpe:/a:canonical:ubuntu_linux:grub-common, p-cpe:/a:canonical:ubuntu_linux:grub-ieee1275, p-cpe:/a:canonical:ubuntu_linux:grub-mount-udeb, p-cpe:/a:canonical:ubuntu_linux:grub2, p-cpe:/a:canonical:ubuntu_linux:grub-uboot, p-cpe:/a:canonical:ubuntu_linux:grub-uboot-bin, p-cpe:/a:canonical:ubuntu_linux:grub-coreboot-bin, p-cpe:/a:canonical:ubuntu_linux:grub-efi, p-cpe:/a:canonical:ubuntu_linux:grub-efi-arm, p-cpe:/a:canonical:ubuntu_linux:grub-efi-arm64-bin, p-cpe:/a:canonical:ubuntu_linux:grub-ieee1275-bin, p-cpe:/a:canonical:ubuntu_linux:grub-pc-bin, p-cpe:/a:canonical:ubuntu_linux:grub-linuxbios, p-cpe:/a:canonical:ubuntu_linux:grub-xen-bin, p-cpe:/a:canonical:ubuntu_linux:grub-pc, p-cpe:/a:canonical:ubuntu_linux:grub-theme-starfield, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:grub-firmware-qemu, p-cpe:/a:canonical:ubuntu_linux:grub-efi-arm64, p-cpe:/a:canonical:ubuntu_linux:grub-xen, p-cpe:/a:canonical:ubuntu_linux:grub2-common, p-cpe:/a:canonical:ubuntu_linux:grub-rescue-pc, p-cpe:/a:canonical:ubuntu_linux:grub-efi-amd64, p-cpe:/a:canonical:ubuntu_linux:grub-efi-amd64-bin, p-cpe:/a:canonical:ubuntu_linux:grub-efi-arm-bin, p-cpe:/a:canonical:ubuntu_linux:grub-efi-ia32-bin, p-cpe:/a:canonical:ubuntu_linux:grub-efi-ia32, p-cpe:/a:canonical:ubuntu_linux:grub-coreboot

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/15/2015

Vulnerability Publication Date: 12/16/2015

Reference Information

CVE: CVE-2015-8370

USN: 2836-1