4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
0.001 Low
EPSS
Percentile
31.1%
An issue was discovered in wolfSSL before 4.3.0 in a non-default
configuration where DSA is enabled. DSA signing uses the BEEA algorithm
during modular inversion of the nonce, leading to a side-channel attack
against the nonce.
github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190
github.com/wolfSSL/wolfssl/commit/7e391f0fd57f2ef375b1174d752a56ce34b2b190 (v4.3.0-stable)
github.com/wolfSSL/wolfssl/releases/tag/v4.3.0-stable
launchpad.net/bugs/cve/CVE-2019-19963
nvd.nist.gov/vuln/detail/CVE-2019-19963
security-tracker.debian.org/tracker/CVE-2019-19963
www.cve.org/CVERecord?id=CVE-2019-19963
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
0.001 Low
EPSS
Percentile
31.1%