SB2021050102 - Gentoo update for Mozilla Thunderbird
Published: May 1, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 17 secuirty vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2021-23961)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the way Firefox handles requests to internal resources. A remote attacker can create a specially crafted web page and combined with slipstream research techniques collect information about hosts in internal network as well as services running on the user's local machine.
2) Improperly implemented security check for standard (CVE-ID: CVE-2021-23968)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to incorrect implementation of W3C Content Security Policy. If Content Security Policy blocked frame navigation, the full destination of a redirect served in the frame was reported in the violation report; as opposed to the original frame URI. A remote attacker can gain knowledge of sensitive information contained in such URIs.3) Improperly implemented security check for standard (CVE-ID: CVE-2021-23969)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to incorrect implementation of W3C Content Security Policy. Under certain types of redirects Firefox incorrectly sets the source
file to be the destination of the redirects. A remote attacker can gain knowledge of the destination URL.
4) Information disclosure (CVE-ID: CVE-2021-23973)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output via a decoding error, when trying to load a cross-origin resource in an audio/video context. A remote attacker can gain access to information about the resource.
5) Buffer overflow (CVE-ID: CVE-2021-23978)
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 webpage, 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.
6) Out-of-bounds read (CVE-ID: CVE-2021-23981)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition during texture upload of a Pixel Buffer Object in WebGL. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.
7) Information disclosure (CVE-ID: CVE-2021-23982)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the way Firefox handles requests to internal hosts. Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections.
8) Spoofing attack (CVE-ID: CVE-2021-23984)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data. A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials.
9) Buffer overflow (CVE-ID: CVE-2021-23987)
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.
10) Out-of-bounds write (CVE-ID: CVE-2021-23994)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input within the WebGL framebuffer. A remote attacker can create a specially crafted web page, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
11) Use-fater-free (CVE-ID: CVE-2021-23995)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input, when Responsive Design Mode is enabled. A remote attacker can create a specially crafted web page, trick the victim into opening it using the affected software, trigger a use-after-fee error and execute arbitrary code on the target system.
12) Insecure Inherited Permissions (CVE-ID: CVE-2021-23998)
the vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to the way HTTP pages inherit a secure lock icon, when navigating from an HTTP page. A remote attacker can create a specially crafted webpage that through a series of complicated navigation will force the browser to display a secure lock icon on an unencrypted HTTP page.
13) Insecure Inherited Permissions (CVE-ID: CVE-2021-23999)
the vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to the way Firefox handles Blob URLs. If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content.
14) Input validation error (CVE-ID: CVE-2021-24002)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input when processing newline characters in an FTP URL (such as %0A and %0D). A remote attacker can trick the victim to click on a specially crafted URL and execute arbitrary FTP commands on a remote server, given that victim has access to the FTP server.
15) Incorrect calculation (CVE-ID: CVE-2021-29945)
The vulnerability allows a remote attacker to crash the application.
The vulnerability exists due to the WebAssembly JIT miscalculates the size of a return type, which leads to a null read. A remote attacker can create a specially crafted web page, trick the victim into visiting it and crash the browser.
Note, the vulnerability affects 32-bit platforms only.
16) Input validation error (CVE-ID: CVE-2021-29946)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input. Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed port blocking restrictions when used in the Alt-Svc header.
17) Race condition (CVE-ID: CVE-2021-29948)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition where signatures are written to disk before and read during verification. A local user can exploit the race and replace files in the process.
Remediation
Install update from vendor's website.