#VU78541 Spoofing attack in Mozilla Thunderbird - CVE-2023-3417

Vulnerability identifier: #VU78541

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-3417

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 the Text Direction Override Unicode Character in filenames. A remote attacker can show a potentially dangerous email attachment as a document file.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Thunderbird: 102.0 - 102.13.0, 115.0

---

External links
https://www.mozilla.org/en-US/security/advisories/mfsa2023-27/
https://www.mozilla.org/en-US/security/advisories/mfsa2023-28/

---

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.