wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults...
Vulnerability Description
wolfSSL (formerly CyaSSL) before 3.6.8 does not properly handle faults associated with the Chinese Remainder Theorem (CRT) process when allowing ephemeral key exchange without low memory optimizations on a server, which makes it easier for remote attackers to obtain private RSA keys by capturing TLS handshakes, aka a Lenstra attack.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2015-7744
Credits & Attribution
No credits recorded in the NVD database.
References
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00015.html
- http://www.securitytracker.com/id/1034708
- http://wolfssl.com/wolfSSL/Docs-wolfssl-changelog.html
- https://people.redhat.com/~fweimer/rsa-crt-leaks.pdf
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- https://wolfssl.com/wolfSSL/Blog/Entries/2015/9/17_Two_Vulnerabilities_Recently_Found%2C_An_Attack_on_RSA_using_CRT_and_DoS_Vulnerability_With_DTLS.html
- https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/
- http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00016.html
More from wolfssl
View All →Affected Vendor
wolfssl
View all reports →Affected Software
Timeline
CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.