CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
71.4%
An issue was discovered in wolfSSL before 5.5.0 (when
–enable-session-ticket is used); however, only version 5.3.0 is
exploitable. Man-in-the-middle attackers or a malicious server can crash
TLS 1.2 clients during a handshake. If an attacker injects a large ticket
(more than 256 bytes) into a NewSessionTicket message in a TLS 1.2
handshake, and the client has a non-empty session cache, the session cache
frees a pointer that points to unallocated memory, causing the client to
crash with a “free(): invalid pointer” message. NOTE: It is likely that
this is also exploitable during TLS 1.3 handshakes between a client and a
malicious server. With TLS 1.3, it is not possible to exploit this as a
man-in-the-middle.
github.com/trailofbits/tlspuffin
github.com/wolfSSL/wolfssl/pull/5476
github.com/wolfSSL/wolfssl/releases
launchpad.net/bugs/cve/CVE-2022-38153
nvd.nist.gov/vuln/detail/CVE-2022-38153
security-tracker.debian.org/tracker/CVE-2022-38153
www.cve.org/CVERecord?id=CVE-2022-38153
www.wolfssl.com/docs/security-vulnerabilities/