title: Constructed ASN.1 types with a recursive definition could exceed the stack
description: Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).
problem types: Stack overflow
affected:
{
product: OpenSSL
vendor: OpenSSL
versions:
status: affected, version: Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g)
status: affected, version: Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n)
}
metrics:
other: [
content: {'lang': 'eng', 'url': 'https://www.openssl.org/policies/secpolicy.html#Moderate', 'value': 'Moderate'}
type: unknown
]