CVE-2019-15699 Information

Description

An issue was discovered in app-layer-ssl.c in Suricata 4.1.4. Upon receiving a corrupted SSLv3 (TLS 1.2) packet the parser function TLSDecodeHSHelloExtensions tries to access a memory region that is not allocated because the expected length of HSHelloExtensions does not match the real length of the HSHelloExtensions part of the packet.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Reference

https://lists.openinfosecfoundation.org/pipermail/oisf-announce/ https://suricata-ids.org/2019/09/24/suricata-4-1-5-released/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1