Vulnerability in Mariadb
CVE-2015-7744
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.050 (92.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.050 · newest: 0.050 · change: 0.000
Affected products
- Mariadb
- Wolfssl
- openSUSE Leap — versions 42.1
- openSUSE — versions 13.1, 13.2
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-security-announce/2016-02/msg00015.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.securitytracker.com/id/1034708 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- wolfssl.com/wolfSSL/Docs-wolfssl-changelog.html (Release Notes, Vendor Advisory)
- people.redhat.com/~fweimer/rsa-crt-leaks.pdf (Exploit, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html (Vendor Advisory)
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (Third Party Advisory)
- wolfssl.com/wolfSSL/Blog/Entries/2015/9/17_Two_Vulnerabilities_Recently_Found,_… (Vendor Advisory)
- securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-… (Exploit, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-02/msg00016.html (vendor-advisory, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-7744?
- CVE-2015-7744 is a medium-severity vulnerability in Mariadb. CVSS score: 5.9/10. Published 2016-01-22.
- How severe is CVE-2015-7744?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2015-7744 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.