CVE-2015-3197

Description

ssl/s2_srvr.c in OpenSSL 1.0.1 before 1.0.1r and 1.0.2 before 1.0.2f does not prevent use of disabled ciphers, which makes it easier for man-in-the-middle attackers to defeat cryptographic protection mechanisms by performing computations on SSLv2 traffic, related to the get_client_master_key and get_client_hello functions.

Category

5.9
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 18.21% Top 10%
Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory FreeBSD.org Vendor Advisory openssl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176373.html vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00010.html vendor advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00015.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00003.html vendor advisory
http://www.securitytracker.com/id/1034849 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00011.html vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.openssl.org/news/secadv/20160128.txt vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00038.html vendor advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390893
https://security.gentoo.org/glsa/201601-05 vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00017.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00025.html vendor advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03724en_us
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00004.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00007.html vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html patch
http://www.securityfocus.com/bid/91787 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00001.html vendor advisory
https://www.kb.cert.org/vuls/id/257823 third party advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00006.html vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2017-3236622.html
http://www.securityfocus.com/bid/82237 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00017.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00002.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00012.html vendor advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:11.openssl.asc vendor advisory
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=d81a1600588b726c2bdccda7efad3cc7a87d6245
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

Frequently Asked Questions

What is the severity of CVE-2015-3197?
CVE-2015-3197 has been scored as a medium severity vulnerability.
How to fix CVE-2015-3197?
To fix CVE-2015-3197, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-3197 being actively exploited in the wild?
It is possible that CVE-2015-3197 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~18% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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