What is CVE-2018-21027?

CVE-2018-21027 is a critical-severity vulnerability in Boa, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-10-11.

How severe is CVE-2018-21027?

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

Buffer overflow in Boa

CVE-2018-21027

Boa through 0.94.14rc21 allows remote attackers to trigger an out-of-memory (OOM) condition because malloc is mishandled.

Vulnerability class: Buffer Overflow

EPSS: 0.024 (81.9th percentile) — read the EPSS interpretation.

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.

Affected products

Boa
N/a — versions n/a

Weakness classification (CWE)

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

References

cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-21027?: CVE-2018-21027 is a critical-severity vulnerability in Boa, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2019-10-11.
How severe is CVE-2018-21027?: Critical severity. CVSS v3 base score is 9.8 out of 10.