SB2021101343 - Red Hat Enterprise Linux 8.2 update for thunderbird
Published: October 13, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Race condition (CVE-ID: CVE-2021-32810)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a race condition in the "Stealer::steal", "Stealer::steal_batch" and "Stealer::steal_batch_and_pop" functions. A remote attacker can exploit the race and gain unauthorized access to sensitive information and execute arbitrary code on the system.
2) Origin validation error (CVE-ID: CVE-2021-38497)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to an error, which can cause a plain-text validation message to overlaid on another origin through the use of reportValidity() and window.open(). A remote attacker can perform a spoofing attack.
3) Memory corruption (CVE-ID: CVE-2021-38500)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can trick the victim to visit a specially crafted web page, trigger a memory corruption and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
4) Buffer overflow (CVE-ID: CVE-2021-38501)
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 website, 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.
5) Use-after-free (CVE-ID: CVE-2021-38498)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in the nsLanguageAtomService object. A remote attacker can trick the victim to open a specially crafted website, 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.
6) Cleartext transmission of sensitive information (CVE-ID: CVE-2021-38502)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to software ignores the configuration to require STARTTLS security for an SMTP connection. A remote attacker with ability to intercept network traffic can gain access to sensitive data.
7) Use-after-free (CVE-ID: CVE-2021-38496)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error during operations on MessageTasks. A remote attacker can trick the victim to visit a specially crafted web page, 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.
Remediation
Install update from vendor's website.