Detections
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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
https://access.redhat.com/errata/RHSA-2020:5135
https://access.redhat.com/security/updates/classification/#critical
Plugin Details
Severity: High
ID: 142994
File Name: redhat-RHSA-2020-5135.nasl
Version: 1.14
Type: local
Agent: unix
Family: Red Hat Local Security Checks
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