Red Hat Enterprise Linux 8.2 update for thunderbird

1) Use-after-free

EUVDB-ID: #VU49300

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-16044

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 when processing COOKIE-ECHO chunk in a SCTP packet. A remote attacker can pass specially crafted data to the browser, trigger a use-after-free error and execute arbitrary code on the system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

thunderbird (Red Hat package): 68.8.0-1.el8_2 - 78.6.0-1.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

CPE2.3

• cpe:2.3:o:red_hat:thunderbird_redhat_package:78.6.0-1.el8_2:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:thunderbird_redhat_package:78.5.1-1.el8_2:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:thunderbird_redhat_package:78.5.0-1.el8_2:*:*:*:*:red_hat_enterprise_linux:*:
• cpe:2.3:o:red_hat:red_hat_enterprise_linux_server_-_tus:8.2:*:*:*:*:red_hat_enterprise_linux:*:

External links

http://access.redhat.com/errata/RHSA-2021:0088

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.