SB2020102042 - Multiple vulnerabilities in Mozilla Firefox and Firefox ESR
Published: October 20, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2020-15684)
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.
2) Buffer overflow (CVE-ID: CVE-2020-15683)
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.
3) Spoofing attack (CVE-ID: CVE-2020-15682)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data. When a link to an external protocol was clicked, a prompt was presented
that allowed the user to choose what application to open it in. An
attacker could induce that prompt to be associated with an origin they
didn't control, resulting in a spoofing attack.
4) Resource management error (CVE-ID: CVE-2020-15681)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper management of internal resources within the application when processing multiple WASM threads. When multiple WASM threads had a reference to a module, and were looking up exported functions, one WASM thread could have overwritten another's entry in a shared stub table. Successful exploitation of the vulnerability may allow an attacker to execute arbitrary code on the system.
5) Information disclosure (CVE-ID: CVE-2020-15680)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the way Firefox handles image tags. A remote attacker can use a specially crafted image tag to reference protocol handlers and depending on the response to determine if the requested external protocol handler is registered on the system.
6) Buffer overflow (CVE-ID: CVE-2020-15254)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the "Vec::from_iter" function in crossbeam-channel. A remote attacker can create a specially crafted data to the application, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Use-after-free (CVE-ID: CVE-2020-15969)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the usersctp library. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger 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.
Remediation
Install update from vendor's website.