What is CVE-2018-0608?

CVE-2018-0608 is a critical-severity vulnerability in Dena H2o, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-06-26.

How severe is CVE-2018-0608?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2018-0608 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Dena H2o

CVE-2018-0608

Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors.

Vulnerability class: Buffer Overflow

EPSS: 0.038 (89.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Dena H2o
Kazuho Oku H2o — versions version 2.2.4 and earlier

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

vultures@jpcert.or.jp (Third Party Advisory, x_refsource_JVN, third-party-advisory)
vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-0608?: CVE-2018-0608 is a critical-severity vulnerability in Dena H2o, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2018-06-26.
How severe is CVE-2018-0608?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-0608 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.