Vulnerability identifier: #VU86642

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-1551

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mozilla Firefox
Client/Desktop applications / Web browsers
Firefox ESR
Client/Desktop applications / Web browsers
Firefox for Android
Mobile applications / Apps for mobile phones
Firefox for iOS
Mobile applications / Apps for mobile phones

Vendor: Mozilla

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of user-supplied input when processing Set-Cookie response headers in multipart HTTP responses. A remote attacker who controls the Content-Type response header and part of the response body can inject Set-Cookie response headers that are honored by the browser.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 100.0 - 122.0.1

Firefox ESR: 102.0 - 102.15.1, 115.0 - 115.7.0

Firefox for Android: 100.1.0 - 122.1.0

Firefox for iOS: 100.1 - 122.2

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External links
http://www.mozilla.org/security/advisories/mfsa2024-05/
http://www.mozilla.org/security/advisories/mfsa2024-06/

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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.