CVE-2016-7053 CMS Null dereference

What is CVE-2016-7053?

CVE-2016-7053 is a high-severity vulnerability in Openssl Openssl, published on 4 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-476

Which versions are affected by CVE-2016-7053?

It affects 1 product.

Products include Openssl Openssl.

How do I fix CVE-2016-7053?

Upgrade to a fixed version.

Is CVE-2016-7053 being exploited?

There is no known exploitation of CVE-2016-7053 in the wild and no public exploit code.

Other vulnerabilities in Openssl Openssl

• CVE-2009-3245 Null dereference in n/a Critical 10.0
• CVE-2006-3738 Memory corruption in n/a Critical 10.0
• CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation Critical 9.8
• CVE-2016-6309 Use after free in n/a Critical 9.8
• CVE-2016-0799 Integer overflow in n/a Critical 9.8

All Openssl Openssl vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-7053, GHSA-hp2v-mmp5-5mcx.