5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
9.0%
wolfSSL SP Math All RSA implementation is vulnerable to the Marvin Attack, new variation of a timing Bleichenbacher style attack, when built with the following options to configure: --enable-all CFLAGS=“-DWOLFSSL_STATIC_RSA” The define “WOLFSSL_STATIC_RSA” enables static RSA cipher suites, which is not recommended, and has been disabled by default since wolfSSL 3.6.6. Therefore the default build since 3.6.6, even with “–enable-all”, is not vulnerable to the Marvin Attack. The vulnerability is specific to static RSA cipher suites, and expected to be padding-independent. The vulnerability allows an attacker to decrypt ciphertexts and forge signatures after probing with a large number of test observations. However the server’s private key is not exposed.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | wolfssl | <= 5.5.4-2+deb12u1 | wolfssl_5.5.4-2+deb12u1_all.deb |
Debian | 11 | all | wolfssl | <= 4.6.0+p1-0+deb11u2 | wolfssl_4.6.0+p1-0+deb11u2_all.deb |
Debian | 999 | all | wolfssl | < 5.6.6-1.2 | wolfssl_5.6.6-1.2_all.deb |
Debian | 13 | all | wolfssl | < 5.6.6-1.2 | wolfssl_5.6.6-1.2_all.deb |