CVE-2016-0701

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Summary

CVECVE-2016-0701
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-02-15 02:59:18 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionThe DH_check_pub_key function in crypto/dh/dh_check.c in OpenSSL 1.0.2 before 1.0.2f does not ensure that prime numbers are appropriate for Diffie-Hellman (DH) key exchange, which makes it easier for remote attackers to discover a private DH exponent by making multiple handshakes with a peer that chose an inappropriate number, as demonstrated by a number in an X9.42 file.

Risk And Classification

Primary CVSS: v3.0 3.7 LOW from [email protected]

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem Types: CWE-200 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary3.7LOWCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
2.0[email protected]Primary2.6AV:N/AC:H/Au:N/C:P/I:N/A:N

CVSS v3.0 Breakdown

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

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/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 Openssl Openssl 1.0.2 All All All
Application Openssl Openssl 1.0.2 beta1 All All
Application Openssl Openssl 1.0.2 beta2 All All
Application Openssl Openssl 1.0.2 beta3 All All
Application Openssl Openssl 1.0.2a All All All
Application Openssl Openssl 1.0.2b All All All
Application Openssl Openssl 1.0.2c All All All
Application Openssl Openssl 1.0.2d All All All
Application Openssl Openssl 1.0.2e All All All

Vendor Declared Affected Products

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

References

ReferenceSourceLinkTags
www.openssl.org/news/secadv/20160128.txt af854a3a-2127-422b-91ae-364da2661108 www.openssl.org Vendor Advisory
USN-2883-1: OpenSSL vulnerability | Ubuntu af854a3a-2127-422b-91ae-364da2661108 www.ubuntu.com
git.openssl.org Git - openssl.git/commit af854a3a-2127-422b-91ae-364da2661108 git.openssl.org
Vulnerability Note VU#257823 - OpenSSL re-uses unsafe prime numbers in Diffie-Hellman protocol af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org
OpenSSL CVE-2016-0701 Security Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Oracle Critical Patch Update - July 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
OpenSSL Flaws Let Remote Users Recover DH Keys in Certain Cases and Let Remote Users Negotiate Disabled Ciphers - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
OpenSSL: Multiple vulnerabilities (GLSA 201601-05) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
Oracle Critical Patch Update - July 2016 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Into the symmetry: OpenSSL Key Recovery Attack on DH small subgroups (CVE-2016-0701) af854a3a-2127-422b-91ae-364da2661108 intothesymmetry.blogspot.com
Oracle Critical Patch Update Advisory - October 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Juniper Networks - 2016-10 Security Bulletin: OpenSSL security updates af854a3a-2127-422b-91ae-364da2661108 kb.juniper.net
Oracle Critical Patch Update Advisory - April 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
[SECURITY] Fedora 23 Update: openssl-1.0.2f-1.fc23 af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Document Display | HPE Support Center af854a3a-2127-422b-91ae-364da2661108 h20566.www2.hpe.com
Oracle Critical Patch Update - October 2017 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Document Display | HPE Support Center af854a3a-2127-422b-91ae-364da2661108 h20566.www2.hpe.com
[security-announce] openSUSE-SU-2016:0637-1: important: Security update af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf af854a3a-2127-422b-91ae-364da2661108 cert-portal.siemens.com
git.openssl.org Git - openssl.git/commit af854a3a-2127-422b-91ae-364da2661108 git.openssl.org
Document Display | HPE Support Center af854a3a-2127-422b-91ae-364da2661108 h20566.www2.hpe.com
Oracle Critical Patch Update Advisory - January 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Oracle July 2016 Critical Patch Update Multiple Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Oracle Critical Patch Update Advisory - July 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
git.openssl.org Git - openssl.git/commit MITRE git.openssl.org
git.openssl.org Git - openssl.git/commit MITRE git.openssl.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

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