#VU9734 Spoofing attack in Mozilla Thunderbird - CVE-2017-7829

Vulnerability identifier: #VU9734

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7829

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 spoof browser address bar.

The vulnerability exists due to encoded null character is cut off in message header display. A remote attacker can spoof the sender's email address and display an arbitrary sender address to the email recipient.

Mitigation
Update to version 52.5.2.

Vulnerable software versions

Mozilla Thunderbird: 52.0 - 52.5

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External links
https://www.mozilla.org/en-US/security/advisories/mfsa2017-30/

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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.