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HIGH

CMS Null dereference

Published May 4, 2017

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

References (8)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner openssl
Published May 4, 2017
Updated Sep 16, 2024
Reserved Aug 23, 2016
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Moderate
Public date Nov 10, 2016