- Vulnerabilities 87,972
OpenSSL DoS Vulnerability (20180327) - Linux
Published: 2021-07-19 12:38:23
CVE Author: NIST National Vulnerability Database
CVSS Base Vector:
AV:N/AC:M/Au:N/C:N/I:N/A:P
Detection Type:
Remote Banner Unreliable
Solution Type:
Vendor Patch
Summary:
OpenSSL is prone to a denial of service (DoS) vulnerability.
Detection Method:
Checks if a vulnerable version is present on the target host.
Technical Details:
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. Reported by
OSS-fuzz.
Affected Versions:
OpenSSL version 1.0.2b through 1.0.2n and 1.1.0 through 1.1.0g.
Recommendations:
Update to version 1.0.2o, 1.1.0h or later.
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