Mozilla Firefox Crashes Due to Initiating Specially Crafted WebTransport Session
CVE-2024-9399

7.5HIGH

Key Information:

Vendor

Mozilla
Status
Firefox
Firefox Esr
Thunderbird
Vendor
CVE Published:
1 October 2024

What is CVE-2024-9399?

A vulnerability exists in the Firefox and Thunderbird applications that allows a specially crafted WebTransport session to crash the application process. This incident results in a denial of service, potentially leaving users unable to access their browsers or email clients. The affected versions include all Firefox versions prior to 131 and all Thunderbird versions prior to 128.3. Users are encouraged to upgrade to the latest versions to mitigate this risk.

Affected Version(s)

Firefox < 131

Firefox ESR < 128.3

Thunderbird < 128.3

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1907726
https://www.mozilla.org/security/advisories/mfsa2024-46/
https://www.mozilla.org/security/advisories/mfsa2024-47/

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Marten Richter
.