Red Hat Enterprise Linux 6 update for firefox



Published: 2020-05-06 | Updated: 2021-07-01
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2020-6831
CVE-2020-12387
CVE-2020-12392
CVE-2020-12395
CWE-ID CWE-119
CWE-416
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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firefox (Red Hat package)
Operating systems & Components / Operating system package or component

Red Hat Enterprise Linux for Power, big endian
Operating systems & Components / Operating system

Red Hat Enterprise Linux for Scientific Computing
Operating systems & Components / Operating system

Red Hat Enterprise Linux for IBM z Systems
Operating systems & Components / Operating system

Red Hat Enterprise Linux Desktop
Operating systems & Components / Operating system

Red Hat Enterprise Linux Workstation
Operating systems & Components / Operating system

Red Hat Enterprise Linux Server
Operating systems & Components / Operating system

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU27532

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-6831

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing SCTP chunks in WebRTC. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 68.2.0-4.el6_10 - 68.7.0-2.el6_10

Red Hat Enterprise Linux for Power, big endian: 6

Red Hat Enterprise Linux for Scientific Computing: 6

Red Hat Enterprise Linux for IBM z Systems: 6

Red Hat Enterprise Linux Desktop: 6

Red Hat Enterprise Linux Workstation: 6

Red Hat Enterprise Linux Server: 6.0


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2020:2036

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Use-after-free

EUVDB-ID: #VU27529

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-12387

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error caused by the race condition when running shutdown code for Web Worker. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 68.2.0-4.el6_10 - 68.7.0-2.el6_10

Red Hat Enterprise Linux for Power, big endian: 6

Red Hat Enterprise Linux for Scientific Computing: 6

Red Hat Enterprise Linux for IBM z Systems: 6

Red Hat Enterprise Linux Desktop: 6

Red Hat Enterprise Linux Workstation: 6

Red Hat Enterprise Linux Server: 6.0


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2020:2036

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

3) Input validation error

EUVDB-ID: #VU27535

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-12392

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to the "Copy as cURL" feature of Devtools network tab did not properly escape the HTTP POST data of a request, which can be controlled by the website. If a user used the 'Copy as cURL' feature and pasted the command into a terminal, it could have resulted in the disclosure of local files.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 68.2.0-4.el6_10 - 68.7.0-2.el6_10

Red Hat Enterprise Linux for Power, big endian: 6

Red Hat Enterprise Linux for Scientific Computing: 6

Red Hat Enterprise Linux for IBM z Systems: 6

Red Hat Enterprise Linux Desktop: 6

Red Hat Enterprise Linux Workstation: 6

Red Hat Enterprise Linux Server: 6.0


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2020:2036

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

4) Buffer overflow

EUVDB-ID: #VU27538

Risk: High

CVSSv3.1:

CVE-ID: CVE-2020-12395

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

firefox (Red Hat package): 68.2.0-4.el6_10 - 68.7.0-2.el6_10

Red Hat Enterprise Linux for Power, big endian: 6

Red Hat Enterprise Linux for Scientific Computing: 6

Red Hat Enterprise Linux for IBM z Systems: 6

Red Hat Enterprise Linux Desktop: 6

Red Hat Enterprise Linux Workstation: 6

Red Hat Enterprise Linux Server: 6.0


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2020:2036

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



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