CVE-2022-38153

wolfssl: An issue was discovered in wolfSSL before 5.5.0 (when --enable-session-ticket is used); however, only version 5.3.0 i...

CVE-2022-38153 is fixed in wolfssl on 1 platform, first by DEBIAN-CVE-2022-38153, released August 31, 2022. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
5.9
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0248
84th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
wolfssl · Debian 12.15 (bookworm) 5.5.3-1 DEBIAN-CVE-2022-38153 Aug 31, 2022
wolfssl · Debian 13.5 (trixie) 5.5.3-1 DEBIAN-CVE-2022-38153 Aug 31, 2022

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