Vulnerability Description
NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 77.0 |
| Mozilla | Firefox Esr | < 68.9.0 |
| Mozilla | Thunderbird | < 68.9.0 |
| Debian | Debian Linux | 9.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631576Issue TrackingPermissions RequiredVendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202007-49Third Party Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4726Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-21/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-22/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1631576Issue TrackingPermissions RequiredVendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/09/msg00029.htmlMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202007-49Third Party Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4726Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-21/Vendor Advisory
FAQ
What is CVE-2020-12399?
CVE-2020-12399 is a vulnerability with a CVSS score of 4.4 (MEDIUM). NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefo...
How severe is CVE-2020-12399?
CVE-2020-12399 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-12399?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Debian Debian Linux.