#VU27572 Spoofing attack in Mozilla Thunderbird - CVE-2020-12397

Vulnerability identifier: #VU27572

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-12397

CWE-ID: CWE-451

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Thunderbird
Client/Desktop applications / Messaging software

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of sender email addresses. A remote attacker can spoof an email address using encoded Unicode characters.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 60.0 - 68.7.0

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External links
https://www.mozilla.org/en-US/security/advisories/mfsa2020-18/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.