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CVE-2015-7744 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.9 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00015.html CVEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00016.html CVEMailing ListThird Party Advisory
https://people.redhat.com/~fweimer/rsa-crt-leaks.pdf CVEExploitThird Party Advisory
https://securityblog.redhat.com/2015/09/02/factoring-rsa-keys-with-tls-perfect-forward-secrecy/ CVEExploitThird Party Advisory
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 CVEVendor Advisory

see all 18 references

Weakness Enumeration

CWE-IDCWE NameSource
NVD-CWE-noinfoInsufficient Information to Classify Weakness[email protected]

Affected Products

ProductVersions
wolfssl wolfssl
< 3.6.8

CPE

  • cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
opensuse leap
42.1

CPE

  • cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
opensuse opensuse
13.1
13.2

CPE

  • cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
  • cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
mariadb mariadb
>= 5.5.0, < 5.5.46
>= 10.0.0, < 10.0.22
>= 10.1.0, < 10.1.9

CPE

  • cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

16 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2015-7744
NVD Published Date:
Jan 22, 2016
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2015-7744 Details - Not Deferred