Vulnerability Details : CVE-2016-0701
The 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.
Vulnerability category: Information leak
Products affected by CVE-2016-0701
- cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2a:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2b:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2c:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2d:*:*:*:*:*:*:*
- cpe:2.3:a:openssl:openssl:1.0.2e:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2016-0701
9.21%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 95 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2016-0701
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.6
|
LOW | AV:N/AC:H/Au:N/C:P/I:N/A:N |
4.9
|
2.9
|
NIST | |
|
3.7
|
LOW | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N |
2.2
|
1.4
|
NIST |
CWE ids for CVE-2016-0701
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
References for CVE-2016-0701
-
https://www.oracle.com/security-alerts/cpujan2020.html
Oracle Critical Patch Update Advisory - January 2020
-
https://www.oracle.com/security-alerts/cpuoct2020.html
Oracle Critical Patch Update Advisory - October 2020
-
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03724en_us
HPESBHF03724 rev.1 - HPE ConvergedSystem 700 Solution with Comware v7 Switches, Remote Disclosure of Information
-
https://www.oracle.com/security-alerts/cpuapr2020.html
Oracle Critical Patch Update Advisory - April 2020
-
https://www.oracle.com/security-alerts/cpujul2020.html
Oracle Critical Patch Update Advisory - July 2020
-
http://www.securityfocus.com/bid/91787
Oracle July 2016 Critical Patch Update Multiple Vulnerabilities
-
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Oracle Critical Patch Update - July 2019
-
https://www.kb.cert.org/vuls/id/257823
VU#257823 - OpenSSL re-uses unsafe prime numbers in Diffie-Hellman protocol
-
https://security.gentoo.org/glsa/201601-05
OpenSSL: Multiple vulnerabilities (GLSA 201601-05) — Gentoo security
-
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
Oracle Critical Patch Update - October 2017
-
http://www.openssl.org/news/secadv/20160128.txt
Vendor Advisory
-
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
Oracle Critical Patch Update - July 2016
-
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176373.html
[SECURITY] Fedora 23 Update: openssl-1.0.2f-1.fc23
-
http://intothesymmetry.blogspot.com/2016/01/openssl-key-recovery-attack-on-dh-small.html
OpenSSL Key Recovery Attack on DH small subgroups (CVE-2016-0701)
-
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=878e2c5b13010329c203f309ed0c8f2113f85648
git.openssl.org Git
-
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html
[security-announce] openSUSE-SU-2016:0637-1: important: Security update
-
http://www.securityfocus.com/bid/82233
OpenSSL CVE-2016-0701 Security Bypass Vulnerability
-
http://www.securitytracker.com/id/1034849
OpenSSL Flaws Let Remote Users Recover DH Keys in Certain Cases and Let Remote Users Negotiate Disabled Ciphers - SecurityTracker
-
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05164821
HPSBGN03621 rev.1 - HPE Universal CMDB using OpenSSL, Remote Disclosure of Sensitive Information
-
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
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https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390893
HPESBHF03703 rev.1 - HPE Network Products including Comware v7 and VCX using OpenSSL, Remote Unauthorized Disclosure of Information
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https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=c5b831f21d0d29d1e517d139d9d101763f60c9a2
git.openssl.org Git
-
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
Juniper Networks - 2016-10 Security Bulletin: OpenSSL security updates
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http://www.ubuntu.com/usn/USN-2883-1
USN-2883-1: OpenSSL vulnerability | Ubuntu security notices
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