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CVE-2020-12399

MEDIUM4.4

NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys

Published Jul 9, 2020

Modified 1 years ago

Fix available

Details

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.

Affected Packages

Ubuntu:14.04:LTSFirefox

Fixed in:

77

Ubuntu:16.04:LTSFirefox

Fixed in:

77

Ubuntu:18.04:LTSFirefox

Fixed in:

77

Ubuntu:20.04:LTSFirefox

Fixed in:

77

Ubuntu:22.04:LTSFirefox

Fixed in:

77

Ubuntu:24.04:LTSFirefox

Fixed in:

77

Ubuntu:25.04Firefox

Fixed in:

77

Ubuntu:25.10Firefox

Fixed in:

77

Windows:10240Mozilla Firefox

Fixed in:

77

Windows:10240Mozilla Firefox ESR

Fixed in:

68.9

Windows:14393Mozilla Firefox

Fixed in:

77

Windows:14393Mozilla Firefox ESR

Fixed in:

68.9

Windows:17763Mozilla Firefox

Fixed in:

77

Windows:17763Mozilla Firefox ESR

Fixed in:

68.9

Windows:18362Mozilla Firefox

Fixed in:

77

Windows:18362Mozilla Firefox ESR

Fixed in:

68.9

Windows:18363Mozilla Firefox

Fixed in:

77

Windows:18363Mozilla Firefox ESR

Fixed in:

68.9

Windows:19041Mozilla Firefox

Fixed in:

77

Windows:19041Mozilla Firefox ESR

Fixed in:

68.9

Windows:19042Mozilla Firefox

Fixed in:

77

Windows:19042Mozilla Firefox ESR

Fixed in:

68.9

Windows:19043Mozilla Firefox

Fixed in:

77

Windows:19043Mozilla Firefox ESR

Fixed in:

68.9

Windows:19044Mozilla Firefox

Fixed in:

77

Windows:19044Mozilla Firefox ESR

Fixed in:

68.9

Windows:19045Mozilla Firefox

Fixed in:

77

Windows:19045Mozilla Firefox ESR

Fixed in:

68.9

Windows:20348Mozilla Firefox

Fixed in:

77

Windows:20348Mozilla Firefox ESR

Fixed in:

68.9

Windows:22000Mozilla Firefox

Fixed in:

77

Windows:22000Mozilla Firefox ESR

Fixed in:

68.9

Windows:22621Mozilla Firefox

Fixed in:

77

Windows:22621Mozilla Firefox ESR

Fixed in:

68.9

Windows:22631Mozilla Firefox

Fixed in:

77

Windows:22631Mozilla Firefox ESR

Fixed in:

68.9

Windows:25398Mozilla Firefox

Fixed in:

77

Windows:25398Mozilla Firefox ESR

Fixed in:

68.9

Windows:26100Mozilla Firefox

Fixed in:

77

Windows:26100Mozilla Firefox ESR

Fixed in:

68.9

Windows:26200Mozilla Firefox

Fixed in:

77

Windows:26200Mozilla Firefox ESR

Fixed in:

68.9

macOS:14Firefox

Fixed in:

77

macOS:14Firefox ESR

Fixed in:

68.9

macOS:15Firefox

Fixed in:

77

macOS:15Firefox ESR

Fixed in:

68.9

macOS:26Firefox

Fixed in:

77

macOS:26Firefox ESR

Fixed in:

68.9

References

WEBhttps://bugzilla.mozilla.org/show_bug.cgi?id=1631576 WEBhttps://lists.debian.org/debian-lts-announce/2020/09/msg00029.html ADVISORYhttps://security.gentoo.org/glsa/202007-49 ADVISORYhttps://usn.ubuntu.com/4421-1/ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2020-12399 ADVISORYhttps://www.debian.org/security/2020/dsa-4726 WEBhttps://www.mozilla.org/security/advisories/mfsa2020-20/WEBhttps://www.mozilla.org/security/advisories/mfsa2020-21/WEBhttps://www.mozilla.org/security/advisories/mfsa2020-22/

CVSS Analysis

CVSS v3.1

4.4

Exploitability

Attack Vector

LocalAV:L

Attack Complexity

HighAC:H

Privileges Required

LowPR:L

User Interaction

RequiredUI:R

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

NoneI:N

Availability

NoneA:N

4.4/CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Timeline

PublishedJul 9, 2020

ModifiedAug 4, 2024

CVE-2020-12399 | Mondoo Vulnerability Intelligence