How severe is CVE-2017-15377?

CVE-2017-15377 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2017-15377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-15377?

CVE-2017-15377 affects Openinfosecfoundation Suricata. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-15377?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-15377 published?

CVE-2017-15377 was published on 2017-10-23 and last updated on 2026-06-17.

CVE-2017-15377

CVE-2017-15377 is a high-severity vulnerability in Openinfosecfoundation Suricata with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Openinfosecfoundation Suricata
Published: 2017-10-23
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is 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).
How severe is CVE-2017-15377?: CVE-2017-15377 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2017-15377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-15377?: CVE-2017-15377 affects Openinfosecfoundation Suricata. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-15377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-15377 published?: CVE-2017-15377 was published on 2017-10-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:openinfosecfoundation:suricata:*:*:*:*:*:*:*:*

More vulnerabilities in Openinfosecfoundation Suricata

CVE-2015-8954 — Critical (CVSS 9.8): The MemcmpLowercase function in Suricata before 2.0.6 improperly excludes the first byte from comparisons, which might…
CVE-2017-7177 — High (CVSS 7.5): Suricata before 3.2.1 has an IPv4 defragmentation evasion issue caused by lack of a check for the IP protocol during…
CVE-2015-0971 — Medium (CVSS 5.0): The DER parser in Suricata before 2.0.8 allows remote attackers to cause a denial of service (crash) via vectors…
CVE-2014-6603 — Medium (CVSS 5.0): The SSHParseBanner function in SSH parser (app-layer-ssh.c) in Suricata before 2.0.4 allows remote attackers to bypass…
CVE-2013-5919 — Medium (CVSS 5.0): Suricata before 1.4.6 allows remote attackers to cause a denial of service (crash) via a malformed SSL record.

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