CVE-2023-6936

EUVD-2023-59134
In wolfSSL prior to 5.6.6, if callback functions are enabled (via the WOLFSSL_CALLBACKS flag), then a malicious TLS client or network attacker can trigger a buffer over-read on the heap of 5 bytes (WOLFSSL_CALLBACKS is only intended for debugging).
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
wolfSSLCNA
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 57%
Affected Products (NVD)
VendorProductVersion
wolfsslwolfssl
𝑥
< 5.6.6
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
wolfssl
bookworm
no-dsa
bullseye
no-dsa
sid
5.7.2-0.1
fixed
trixie
5.7.2-0.1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
wolfssl
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
lunar
ignored
mantic
ignored
noble
not-affected
oracular
not-affected
trusty
ignored
xenial
needs-triage
Common Weakness Enumeration
References
https://github.com/wolfSSL/wolfssl/pull/6949/
https://www.wolfssl.com/docs/security-vulnerabilities/
https://github.com/wolfSSL/wolfssl/pull/6949/
https://www.wolfssl.com/docs/security-vulnerabilities/