CVE-2016-7053

CMS Null dereference

Description

In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.06% Top 25%
Vendor Advisory openssl.org
Affected: OpenSSL OpenSSL
Published at:
Updated at:

References

Link Tags
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us
http://www.securityfocus.com/bid/94244 vdb entry third party advisory
https://www.openssl.org/news/secadv/20161110.txt vendor advisory
http://www.securitytracker.com/id/1037261 vdb entry

Frequently Asked Questions

What is the severity of CVE-2016-7053?
CVE-2016-7053 has been scored as a high severity vulnerability.
How to fix CVE-2016-7053?
To fix CVE-2016-7053, 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-2016-7053 being actively exploited in the wild?
It is possible that CVE-2016-7053 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-7053?
CVE-2016-7053 affects OpenSSL OpenSSL.
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