CVE-2016-0701low
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Description
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.
References
http://intothesymmetry.blogspot.com/2016/01/openssl-key-recovery-attack-on-dh-small.html
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176373.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html
http://www.openssl.org/news/secadv/20160128.txt
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.securityfocus.com/bid/82233
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1034849
http://www.ubuntu.com/usn/USN-2883-1
https://git.openssl.org/?p=openssl.git;a=commit;h=878e2c5b13010329c203f309ed0c8f2113f85648
https://git.openssl.org/?p=openssl.git;a=commit;h=c5b831f21d0d29d1e517d139d9d101763f60c9a2
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03724en_us
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05164821
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390893
https://security.gentoo.org/glsa/201601-05
https://www.kb.cert.org/vuls/id/257823
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Details
Source: MITRE
Published: 2016-02-15
Updated: 2020-10-20
Type: CWE-200
Risk Information
CVSS v2
Base Score: 2.6
Vector: AV:N/AC:H/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 4.9
Severity: LOW
CVSS v3
Base Score: 3.7
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Impact Score: 1.4
Exploitability Score: 2.2
Severity: LOW
Vulnerable Software
Configuration 1
OR
cpe:2.3:a:openssl:openssl:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2:beta1:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2:beta2:*:*:*:*:*:*
cpe:2.3:a:openssl:openssl:1.0.2:beta3:*:*:*:*:*:*
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:*:*:*:*:*:*:*
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 105353 | SUSE SLED12 / SLES12 Security Update : openssl (SUSE-SU-2017:3343-1) | Nessus | SuSE Local Security Checks | medium |
| 105341 | openSUSE Security Update : openssl (openSUSE-2017-1381) | Nessus | SuSE Local Security Checks | medium |
| 105141 | FreeBSD : FreeBSD -- OpenSSL multiple vulnerabilities (9f7a0f39-ddc0-11e7-b5af-a4badb2f4699) | Nessus | FreeBSD Local Security Checks | medium |
| 9465 | OpenSSL 1.0.2 < 1.0.2f Information Disclosure | Nessus Network Monitor | Web Servers | low |
| 89543 | Fedora 23 : openssl-1.0.2f-1.fc23 (2016-527018d2ff) | Nessus | Fedora Local Security Checks | medium |
| 88586 | GLSA-201601-05 : OpenSSL: Multiple vulnerabilities | Nessus | Gentoo Local Security Checks | high |
| 88530 | OpenSSL 1.0.2 < 1.0.2f Multiple Vulnerabilities (Logjam) | Nessus | Web Servers | low |
| 88487 | Ubuntu 15.10 : openssl vulnerability (USN-2883-1) | Nessus | Ubuntu Local Security Checks | low |
| 88465 | FreeBSD : openssl -- multiple vulnerabilities (3679fd10-c5d1-11e5-b85f-0018fe623f2b) | Nessus | FreeBSD Local Security Checks | medium |