OCSP Request Validation Flaw in wolfSSL by wolfSSL
CVE-2021-37155

9.8CRITICAL

Key Information:

Vendor

Wolfssl

Status
Wolfssl
Vendor
CVE Published:
21 July 2021

What is CVE-2021-37155?

The wolfSSL library versions 4.6.x to 4.7.x prior to 4.8.0 are susceptible to a vulnerability where the library does not appropriately handle discrepancies between the serial number in an OCSP request and that in the OCSP response. This oversight may lead to the library failing to produce a correct failure outcome, which can undermine the integrity of the OCSP validation process and potentially allow for unauthorized access.

References

https://github.com/wolfSSL/wolfssl/pull/3990
x_refsource_MISC
https://github.com/wolfSSL/wolfssl/releases/tag/v4.8.0-st...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.