CVE-2018-0739

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).

Weakness classification

• CWE-674: Uncontrolled Recursion

Primary references

• openssl-security@openssl.org — Patch, Third Party Advisory
• openssl-security@openssl.org
• openssl-security@openssl.org
• openssl-security@openssl.org — Third Party Advisory, VDB Entry
• openssl-security@openssl.org
• openssl-security@openssl.org — Third Party Advisory, VDB Entry
• openssl-security@openssl.org
• openssl-security@openssl.org
• openssl-security@openssl.org
• openssl-security@openssl.org
• openssl-security@openssl.org
• openssl-security@openssl.org