SB2022050527 - Red Hat Enterprise Linux 7 update for thunderbird
Published: May 5, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-29909)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due improper management of permissions within the application. Documents in deeply-nested cross-origin browsing contexts can obtain permissions granted to the top-level origin. A remote attacker can create a web page that bypasses the existing browser prompt and wrongfully inherits the top-level permissions.
2) Buffer overflow (CVE-ID: CVE-2022-29917)
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.
3) Security features bypass (CVE-ID: CVE-2022-29911)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper protection for the top-level navigation for an iframe sandbox with a policy relaxed through a keyword like allow-top-navigation-by-user-activation. A remote attacker can abuse this to bypass implemented sandboxing restrictions of loaded iframes.
4) Information disclosure (CVE-ID: CVE-2022-29916)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to browsers behaves differently when loading CSS from known resources involving CSS variables. A remote attacker can monitor browser behavior to guess which websites were previously visited and are stored in browser history.
5) Security features bypass (CVE-ID: CVE-2022-29912)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to requests initiated through reader mode did not properly omit cookies with a SameSite attribute. A remote attacker can intercept cookies with SameSite attribute set.
6) Insufficient UI warning of dangerous operations (CVE-ID: CVE-2022-29914)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to an error when reusing existing popups. A remote attacker can trick the victim to visit a specially crated website and abuse the popups to cover the fullscreen notification UI, which can allow browser spoofing attack.
7) Resource management error (CVE-ID: CVE-2022-29913)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper management of internal resources when handling Speech Synthesis feature. The parent process does not properly check whether the Speech Synthesis
feature is enabled, when receiving instructions from a child process.
8) Spoofing attack (CVE-ID: CVE-2022-1520)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data when processing signed and encrypted attached messages. If an email contains 2 attached messages, Thunderbird displays security status of the first opened attached message for the second attached message. As a result an attacker can spoof security status of the second attached message.
Remediation
Install update from vendor's website.