CVE-2022-38153
Man-in-the-middle attackers or a malicious server can crash TLS 1.2 clients during a handshake.
Does this matter?
Lower severity and a low EPSS score (2.33%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.33% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- wolfssl/wolfssl
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/170605/wolfSSL-5.3.0-Denial-Of-Service.htmlExploit, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/8Exploit, Mailing List, Third Party Advisory
- https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/Third Party Advisory
- https://github.com/trailofbits/tlspuffinNot Applicable
- https://github.com/wolfSSL/wolfssl/pull/5476Exploit, Patch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/releasesRelease Notes
- https://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory
- http://packetstormsecurity.com/files/170605/wolfSSL-5.3.0-Denial-Of-Service.htmlExploit, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jan/8Exploit, Mailing List, Third Party Advisory
- https://blog.trailofbits.com/2023/01/12/wolfssl-vulnerabilities-tlspuffin-fuzzing-ssh/Third Party Advisory
- https://github.com/trailofbits/tlspuffinNot Applicable
- https://github.com/wolfSSL/wolfssl/pull/5476Exploit, Patch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/releasesRelease Notes
- https://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.