Medium severity · published Sep 2, 2022
CVE-2021-44718
wolfSSL through 5.0.0 allows an attacker to cause a denial of service and infinite loop in the client component by sending crafted traffic from a Machine-in-the-Middle (MITM)…
5.9
CVSS
0.8%
EPSS
No
On KEV
Description
wolfSSL through 5.0.0 allows an attacker to cause a denial of service and infinite loop in the client component by sending crafted traffic from a Machine-in-the-Middle (MITM) position. The root cause is that the client module accepts TLS messages that normally are only sent to TLS servers.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 56% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
Wolfssl · Wolfssl
through 5.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-44718
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-44718
Release Notes
https://github.com/wolfSSL/wolfssl/releases
Vendor Advisory
https://www.wolfssl.com/docs/security-vulnerabilities/
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