Vulnerability Description
The AES-GCM implementation in WebCrypto API accepts 0-length IV when it should require a length of 1 according to the NIST Special Publication 800-38D specification. This might allow for the authentication key to be determined in some instances. This vulnerability affects Firefox < 56.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | <= 55.0.3 |
References
- http://www.securityfocus.com/bid/101057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039465Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1368859Issue Tracking
- https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
- http://www.securityfocus.com/bid/101057Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039465Third Party AdvisoryVDB Entry
- https://bugzilla.mozilla.org/show_bug.cgi?id=1368859Issue Tracking
- https://www.mozilla.org/security/advisories/mfsa2017-21/Vendor Advisory
FAQ
What is CVE-2017-7822?
CVE-2017-7822 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The AES-GCM implementation in WebCrypto API accepts 0-length IV when it should require a length of 1 according to the NIST Special Publication 800-38D specification. This might allow for the authentic...
How severe is CVE-2017-7822?
CVE-2017-7822 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7822?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.