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RHEL 8 : firefox (RHSA-2020:5135)

high Nessus Plugin ID 142994

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Synopsis

The remote Red Hat host is missing a security update for firefox.

Description

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2020:5135 advisory.

 Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

 This update upgrades Firefox to version 78.4.1 ESR.

 Security Fix(es):

 * Mozilla: Write side effects in MCallGetProperty opcode not accounted for (CVE-2020-26950)

 For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux 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 RHEL firefox package based on the guidance in RHSA-2020:5135.

See Also

http://www.nessus.org/u?bfbfe072

https://access.redhat.com/security/updates/classification/#critical

https://access.redhat.com/errata/RHSA-2020:5135

https://bugzilla.redhat.com/show_bug.cgi?id=1896306

Plugin Details

Severity: High

ID: 142994

File Name: redhat-RHSA-2020-5135.nasl

Version: 1.14

Type: local

Agent: unix

Published: 11/18/2020

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.7

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

CVSS Score Source: CVE-2020-26950

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

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

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

Vulnerability Information

CPE: cpe:/o:redhat:rhel_eus:8.1, p-cpe:/a:redhat:enterprise_linux:firefox

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/17/2020

Vulnerability Publication Date: 11/9/2020

Exploitable With

Metasploit (Firefox MCallGetProperty Write Side Effects Use After Free Exploit)

Reference Information

CVE: CVE-2020-26950

CWE: 416

IAVA: 2020-A-0531-S

RHSA: 2020:5135