Medium severity5.9NVD Advisory· Published Jan 22, 2016· Updated May 6, 2026

CVE-2015-7744

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.

Affected products

MariaDB/MariaDB
cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
Range: >=5.5.0,<5.5.46
WolfSSL/Wolfssl
cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*
Range: <3.6.8
OpenSUSE/Leap
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
OpenSUSE/openSUSE2 versions
cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
osv-coords27 versions
pkg:rpm/suse/lz4&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/lz4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/lz4&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/mariadb104&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS pkg:rpm/suse/mariadb104&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/mariadb104&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS pkg:rpm/suse/mariadb104&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/mariadb104&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1 pkg:rpm/suse/mariadb104&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/mariadb-connector-c&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/mariadb-connector-c&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/mariadb-connector-c&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP3 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATA pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP3 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP3 pkg:rpm/suse/mysql&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4 pkg:rpm/suse/python-mysqlclient&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS pkg:rpm/suse/python-mysqlclient&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/python-mysqlclient&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS pkg:rpm/suse/python-mysqlclient&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/python-mysqlclient&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1 pkg:rpm/suse/python-mysqlclient&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5
< 1.8.0-3.5.2+ 26 more
- (no CPE)range: < 1.8.0-3.5.2
- (no CPE)range: < 1.8.0-3.5.2
- (no CPE)range: < 1.8.0-3.5.2
- (no CPE)range: < 10.4.30-150100.3.5.10
- (no CPE)range: < 10.4.30-8.5.46
- (no CPE)range: < 10.4.30-150100.3.5.10
- (no CPE)range: < 10.4.30-8.5.46
- (no CPE)range: < 10.4.30-150100.3.5.10
- (no CPE)range: < 10.4.30-8.5.46
- (no CPE)range: < 3.1.22-2.35.1
- (no CPE)range: < 3.1.22-2.35.1
- (no CPE)range: < 3.1.22-2.35.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 5.5.47-0.17.1
- (no CPE)range: < 1.4.6-150100.3.3.7
- (no CPE)range: < 1.3.14-8.9.2
- (no CPE)range: < 1.4.6-150100.3.3.7
- (no CPE)range: < 1.3.14-8.9.2
- (no CPE)range: < 1.4.6-150100.3.3.7
- (no CPE)range: < 1.3.14-8.9.2

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

people.redhat.com/~fweimer/rsa-crt-leaks.pdfnvdExploitThird Party Advisory
securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/nvdExploitThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2016-02/msg00015.htmlnvdMailing ListThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2016-02/msg00016.htmlnvdMailing ListThird Party Advisory
wolfssl.com/wolfSSL/Docs-wolfssl-changelog.htmlnvdRelease NotesVendor Advisory
www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlnvdThird Party Advisory
www.oracle.com/technetwork/topics/security/cpujan2016-2367955.htmlnvdVendor Advisory
www.securitytracker.com/id/1034708nvdBroken LinkThird Party AdvisoryVDB Entry
wolfssl.com/wolfSSL/Blog/Entries/2015/9/17_Two_Vulnerabilities_Recently_Found%2C_An_Attack_on_RSA_using_CRT_and_DoS_Vulnerability_With_DTLS.htmlnvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.384
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000