CMS Null dereference
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 22%
exploitation probability
22%top 3% of all CVEs
observed exploitation
nono source reports it
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
OpenSSL · OpenSSL