wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size. An attacker sends a crafted hello client packet over the network to a TLSv1.3 wolfSSL server. The length fields of the packet: record length, client hello length, total extensions length, PSK extension length, total identity length, and identity length contain their maximum value which is 2^16. The identity data field of the PSK extension of the packet contains the attack data, to be stored in the undefined memory (RAM) of the server. The size of the data is about 65 kB. Possibly the attacker can perform a remote code execution attack.
References
Configurations
History
21 Nov 2024, 04:21
| Type | Values Removed | Values Added |
|---|---|---|
| References | () http://www.securityfocus.com/bid/108466 - Broken Link | |
| References | () https://www.telekom.com/en/corporate-responsibility/data-protection-data-security/security/details/advisories-504842 - Third Party Advisory | |
| References | () https://www.telekom.com/resource/blob/572524/1c89c1cbaccdf792153063b3a10af10e/dl-190515-remote-buffer-overflow-vulnerability-wolfssl-library-data.pdf - Patch, Third Party Advisory |
Information
Published : 2019-05-23 13:29
Updated : 2024-11-21 04:21
NVD link : CVE-2019-11873
Mitre link : CVE-2019-11873
CVE.ORG link : CVE-2019-11873
JSON object : View
Products Affected
wolfssl
- wolfssl
CWE
CWE-787
Out-of-bounds Write