CVE-2019-11873

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.
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Configurations

Configuration 1 (hide)

cpe:2.3:a:wolfssl:wolfssl:4.0:-:*:*:*:*:*:*

Information

Published : 2019-05-23 06:29

Updated : 2022-04-22 13:11


NVD link : CVE-2019-11873

Mitre link : CVE-2019-11873


JSON object : View

CWE
CWE-787

Out-of-bounds Write

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Products Affected

wolfssl

  • wolfssl