4.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
1.2 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:H/Au:N/C:P/I:N/A:N
0.001 Low
EPSS
Percentile
27.9%
During RSA key generation, bignum implementations used a variation of the
Binary Extended Euclidean Algorithm which entailed significantly
input-dependent flow. This allowed an attacker able to perform
electromagnetic-based side channel attacks to record traces leading to the
recovery of the secret primes. Note: An unmodified Firefox browser does
not generate RSA keys in normal operation and is not affected, but products
built on top of it might. This vulnerability affects Firefox < 78.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | nss | < 2:3.35-2ubuntu2.9 | UNKNOWN |
ubuntu | 19.10 | noarch | nss | < 2:3.45-1ubuntu2.4 | UNKNOWN |
ubuntu | 20.04 | noarch | nss | < 2:3.49.1-1ubuntu1.2 | UNKNOWN |
ubuntu | 14.04 | noarch | nss | < 2:3.28.4-0ubuntu0.14.04.5+esm6) Available with Ubuntu Pro or Ubuntu Pro (Infra-only | UNKNOWN |
ubuntu | 16.04 | noarch | nss | < 2:3.28.4-0ubuntu0.16.04.12 | UNKNOWN |
developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.53.1_release_notes
launchpad.net/bugs/cve/CVE-2020-12402
nvd.nist.gov/vuln/detail/CVE-2020-12402
security-tracker.debian.org/tracker/CVE-2020-12402
ubuntu.com/security/notices/USN-4417-1
ubuntu.com/security/notices/USN-4417-2
www.cve.org/CVERecord?id=CVE-2020-12402
4.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
1.2 Low
CVSS2
Access Vector
LOCAL
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:H/Au:N/C:P/I:N/A:N
0.001 Low
EPSS
Percentile
27.9%