CVE-2022-42905

moderate-risk
Published 2022-11-07

In wolfSSL before 5.5.2, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS 1.3 client or network attacker can trigger a buffer over-read on the heap of 5 bytes. (WOLFSSL_CALLBACKS is only intended for debugging.)

Do I need to act?

~
6.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.1/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Wolfssl

References (12)

Third Party Advisory http://packetstormsecurity.com/files/170610/wolfSSL-WOLFSSL_CALLBACKS-Heap-Buffe...
Mailing List http://seclists.org/fulldisclosure/2023/Jan/11
https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzin...
Release Notes https://github.com/wolfSSL/wolfssl/releases
Release Notes https://github.com/wolfSSL/wolfssl/releases/tag/v5.5.2-stable
Vendor Advisory https://www.wolfssl.com/docs/security-vulnerabilities/
Third Party Advisory http://packetstormsecurity.com/files/170610/wolfSSL-WOLFSSL_CALLBACKS-Heap-Buffe...
Mailing List http://seclists.org/fulldisclosure/2023/Jan/11
https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzin...
Release Notes https://github.com/wolfSSL/wolfssl/releases
Release Notes https://github.com/wolfSSL/wolfssl/releases/tag/v5.5.2-stable
Vendor Advisory https://www.wolfssl.com/docs/security-vulnerabilities/
45
/ 100
moderate-risk
Severity 31/34 · Critical
Exploitability 9/34 · Low
Exposure 5/34 · Minimal