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Vulnerability record · CVE-2019-15699 · published 24 September 2019

CVE-2019-15699: Suricata-ids suricata out-of-bounds read vulnerability

SSuricata Ids · Suricata

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.

9.1 CVSS 3.1 Critical EPSS 1.6% · top 24.3% CWE-125 · Out-of-bounds read
9.1CVSS 3.1 base score, v2 6.4
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.openinfosecfoundation.org/pipermail/oisf-announce/ Third Party Advisory
https://suricata-ids.org/2019/09/24/suricata-4-1-5-released/ Release NotesVendor Advisory
https://lists.openinfosecfoundation.org/pipermail/oisf-announce/ Third Party Advisory
https://suricata-ids.org/2019/09/24/suricata-4-1-5-released/ Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-15699), CISA KEV, FIRST EPSS (scores of 2026-10-09). This page is refreshed as NVD updates the record.