DEBIAN-CVE-2020-12399

Advisory lineage Upstream: 1 Downstream: 7
Upstream
CVE-2020-12399
Published: 09 Jul 2020, 15:15
Last modified:28 Apr 2026, 20:21

Vulnerability Summary

Overall Risk (default)
low
18/100
CVSS Score
4.4 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Jul 2020, 15:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:21
Last Modified
Vulnerability information updated

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 Metrics

  • v3.1•MEDIUM•Score: 4.4CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Affected Systems

  • debian•firefox-esr

    < 68.9.0esr-1 | < 68.9.0esr-1 | < 68.9.0esr-1 | < 68.9.0esr-1

  • debian•nss

    < 2:3.53-1 | < 2:3.53-1 | < 2:3.53-1 | < 2:3.53-1

  • debian•thunderbird

    < 1:68.9.0-1 | < 1:68.9.0-1 | < 1:68.9.0-1 | < 1:68.9.0-1

References (1)