Vulnerability Details : CVE-2017-15377
In Suricata before 4.x, it was possible to trigger lots of redundant checks on the content of crafted network traffic with a certain signature, because of DetectEngineContentInspection in detect-engine-content-inspection.c. The search engine doesn't stop when it should after no match is found; instead, it stops only upon reaching inspection-recursion-limit (3000 by default).
Products affected by CVE-2017-15377
- cpe:2.3:a:openinfosecfoundation:suricata:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-15377
0.26%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 63 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-15377
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
References for CVE-2017-15377
-
https://redmine.openinfosecfoundation.org/issues/2231
Bug #2231: Redundant content checks may cause Suricata DoS condition on a insignificant traffic rate - Suricata - Open Information Security FoundationVendor Advisory
-
https://github.com/OISF/suricata/commit/b9579fbe7dd408200ef03cbe20efddb624b73885
detect: avoid needless recursive scanning · OISF/suricata@b9579fb · GitHub
-
https://lists.debian.org/debian-lts-announce/2018/12/msg00000.html
[SECURITY] [DLA 1603-1] suricata security update
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