Critical severity · published Jul 21, 2021
CVE-2021-37155
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response
9.8
CVSS
1.5%
EPSS
No
On KEV
Description
wolfSSL 4.6.x through 4.7.x before 4.8.0 does not produce a failure outcome when the serial number in an OCSP request differs from the serial number in the OCSP response.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 74% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
Wolfssl · Wolfssl
4.6.0 before 4.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-37155
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-37155
Patch
https://github.com/wolfSSL/wolfssl/pull/3990
Release Notes
https://github.com/wolfSSL/wolfssl/releases/tag/v4.8.0-stable
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