Out-of-bounds Read in Suricata-Ids Suricata
CVE-2019-16411
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Suricata-Ids Suricata — versions 4.1.4
Weakness classification (CWE)
References
- lists.openinfosecfoundation.org/pipermail/oisf-announce/ (Third Party Advisory)
- suricata-ids.org/2019/09/24/suricata-4-1-5-released/ (Release Notes, Vendor Advisory)
- www.code-intelligence.com/cve-2019-16411
Frequently asked questions
- What is CVE-2019-16411?
- CVE-2019-16411 is a critical-severity vulnerability in Suricata-Ids Suricata, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2019-09-24.
- How severe is CVE-2019-16411?
- Critical severity. CVSS v3 base score is 9.8 out of 10.