PRIOn knowledge basePRION:CVE-2020-12402Design/Logic Flaw
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
5.7 Medium
AI Score
Confidence
Low
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
27.0%
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.
References
lists.opensuse.org/opensuse-security-announce/2020-07/msg00016.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00018.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html
lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html
bugzilla.mozilla.org/show_bug.cgi?id=1631597
lists.debian.org/debian-lts-announce/2020/09/msg00029.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RFL6UNFK4MG2WDXLMLFAEIUSM5EUK7CG/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UWVDJRARXNWWWTCGMM63EXLQHH2LNOXO/
security.gentoo.org/glsa/202007-10
usn.ubuntu.com/4417-1/
usn.ubuntu.com/4417-2/
www.debian.org/security/2020/dsa-4726
www.mozilla.org/security/advisories/mfsa2020-24/
Related
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
5.7 Medium
AI Score
Confidence
Low
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
27.0%