VulnerabilityModified
CVE-2019-16411
An issue was discovered in Suricata 4.1.4.
CRITICAL 9.8EPSS 2.03%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.03%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in Suricata 4.1.4. By sending multiple IPv4 packets that have invalid IPv4Options, the function IPV4OptValidateTimestamp in decode-ipv4.c tries to access a memory region that is not allocated. There is a check for o->len < 5 (corresponding to 2 bytes of header and 3 bytes of data). Then, "flag = *(o->data + 3)" places one beyond the 3 bytes, because the code should have been "flag = *(o->data + 1)" instead.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.03% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- suricata-ids/suricata
- Source
- cve@mitre.org
References
- https://lists.openinfosecfoundation.org/pipermail/oisf-announce/Third Party Advisory
- https://suricata-ids.org/2019/09/24/suricata-4-1-5-released/Release Notes, Vendor Advisory
- https://www.code-intelligence.com/cve-2019-16411
- https://lists.openinfosecfoundation.org/pipermail/oisf-announce/Third Party Advisory
- https://suricata-ids.org/2019/09/24/suricata-4-1-5-released/Release Notes, Vendor Advisory
- https://www.code-intelligence.com/cve-2019-16411
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.