SB2020060409 - Multiple vulnerabilities in Mozilla Thunderbird
Published: June 4, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Race condition (CVE-ID: CVE-2020-12399)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to time differences in Mozilla NSS library during the process of generating a DSA signature, the nonce value 'k' is not padded, exposing the bit length. Combined with other techniques, this can result in the recovery of the DSA private key.
2) Use-after-free (CVE-ID: CVE-2020-12405)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when in SharedWorkerService due to a race condition. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a 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.
3) Type Confusion (CVE-ID: CVE-2020-12406)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a type confusion error during unboxed JavaScript objects removal. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a type confusion error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
4) Buffer overflow (CVE-ID: CVE-2020-12410)
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.
5) Cleartext transmission of sensitive information (CVE-ID: CVE-2020-12398)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists in STARTTLS implementation for an IMAP, when the server sends a PREAUTH response. In this case Thunderbird will continue with an unencrypted connection, causing email data to be sent without protection.
Remediation
Install update from vendor's website.