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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Cisco Apic | — | Upgrade to the latest version of Cisco APIC to resolve this vulnerability. | May 11, 2026 | Nov 14, 2016 |
| Debian | — | Upgrade openssl | Jul 30, 2024 | May 4, 2017 |
| Freebsd | — | Upgrade openssl-devel | Nov 14, 2016 | Nov 10, 2016 |
| Http Openssl | — | Upgrade to the latest version of OpenSSL | May 4, 2017 | May 4, 2017 |
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