CVE-2015-7744

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Summary

CVECVE-2015-7744
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-01-22 15:59:04 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionwolfSSL (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.

Risk And Classification

Primary CVSS: v3.1 5.9 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: NVD-CWE-noinfo | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.9MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.0[email protected]Primary2.6AV:N/AC:H/Au:N/C:P/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:H/Au:N/C:P/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mariadb Mariadb All All All All
Operating System Opensuse Leap 42.1 All All All
Operating System Opensuse Opensuse 13.1 All All All
Operating System Opensuse Opensuse 13.2 All All All
Application Wolfssl Wolfssl All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Docs-wolfssl-changelog af854a3a-2127-422b-91ae-364da2661108 wolfssl.com Release Notes, Vendor Advisory
Factoring RSA Keys With TLS Perfect Forward Secrecy | Red Hat Security af854a3a-2127-422b-91ae-364da2661108 securityblog.redhat.com Exploit, Third Party Advisory
[security-announce] openSUSE-SU-2016:0377-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
Oracle Critical Patch Update - January 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Vendor Advisory
people.redhat.com/~fweimer/rsa-crt-leaks.pdf af854a3a-2127-422b-91ae-364da2661108 people.redhat.com Exploit, Third Party Advisory
Two Vulnerabilities Recently Found, An Attack on RSA using CRT and DoS Vulnerability With DTLS af854a3a-2127-422b-91ae-364da2661108 wolfssl.com Vendor Advisory
[security-announce] openSUSE-SU-2016:0367-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
MySQL Multiple Bugs Let Remote Users Access Data and Deny Service, Remote Authenticated Users Modify Data, and Local Users Gain Elevated Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Broken Link, Third Party Advisory, VDB Entry
Oracle Solaris Bulletin - April 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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