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Ubuntu 18.04 ESM : Bundler vulnerability (USN-4870-1)

high Nessus Plugin ID 183182

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 18.04 ESM host has packages installed that are affected by a vulnerability as referenced in the USN-4870-1 advisory.

 - Bundler prior to 2.1.0 uses a predictable path in /tmp/, created with insecure permissions as a storage location for gems, if locations under the user's home directory are not available. If Bundler is used in a scenario where the user does not have a writable home directory, an attacker could place malicious code in this directory that would be later loaded and executed. (CVE-2019-3881)

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 bundler and / or ruby-bundler packages.

See Also

https://ubuntu.com/security/notices/USN-4870-1

Plugin Details

Severity: High

ID: 183182

File Name: ubuntu_USN-4870-1.nasl

Version: 1.0

Type: local

Agent: unix

Published: 10/16/2023

Updated: 10/16/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 3.3

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

CVSS Score Source: CVE-2019-3881

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:bundler, p-cpe:/a:canonical:ubuntu_linux:ruby-bundler

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/15/2021

Vulnerability Publication Date: 9/4/2020

Reference Information

CVE: CVE-2019-3881

USN: 4870-1