CVE-2015-1794

Description

The ssl3_get_key_exchange function in ssl/s3_clnt.c in OpenSSL 1.0.2 before 1.0.2e allows remote servers to cause a denial of service (segmentation fault) via a zero p value in an anonymous Diffie-Hellman (DH) ServerKeyExchange message.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 5.22% Top 15%
Vendor Advisory cisco.com Vendor Advisory slackware.com Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory openssl.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151204-openssl vendor advisory
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2015&m=slackware-security.754583 vendor advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
http://www.ubuntu.com/usn/USN-2830-1 vendor advisory
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
http://openssl.org/news/secadv/20151203.txt vendor advisory
https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=ada57746b6b80beae73111fe1291bf8dd89af91c
http://www.securitytracker.com/id/1034294 vdb entry
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00009.html vendor advisory
http://fortiguard.com/advisory/openssl-advisory-december-2015
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05398322
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10759
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf

Frequently Asked Questions

What is the severity of CVE-2015-1794?
CVE-2015-1794 has been scored as a medium severity vulnerability.
How to fix CVE-2015-1794?
To fix CVE-2015-1794, 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-2015-1794 being actively exploited in the wild?
It is possible that CVE-2015-1794 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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