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Ubuntu 18.04 LTS : Mercurial vulnerabilities (USN-5102-1)

critical Nessus Plugin ID 153857

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5102-1 advisory.

 It was discovered that Mercurial mishandled symlinks in subrepositories. An attacker could use this issue to write arbitrary files to the targets filesystem. (CVE-2019-3902)

 It was discovered that Mercurial incorrectly handled certain manifest files. An attacker could use this issue to cause a denial of service and possibly execute arbitrary code. (CVE-2018-17983)

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

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

Solution

Update the affected mercurial and / or mercurial-common packages.

See Also

https://ubuntu.com/security/notices/USN-5102-1

Plugin Details

Severity: Critical

ID: 153857

File Name: ubuntu_USN-5102-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 10/4/2021

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2018-17983

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:mercurial-common, p-cpe:/a:canonical:ubuntu_linux:mercurial

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/4/2021

Vulnerability Publication Date: 10/4/2018

Reference Information

CVE: CVE-2018-17983, CVE-2019-3902

USN: 5102-1