What is CVE-2018-18440?

CVE-2018-18440 is a high-severity vulnerability in Denx U-Boot, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2018-11-20.

How severe is CVE-2018-18440?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2018-18440 known to be exploited?

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

Buffer overflow in Denx U-Boot

CVE-2018-18440

DENX U-Boot through 2018.09-rc1 has a locally exploitable buffer overflow via a crafted kernel image because filesystem loading is mishandled.

Vulnerability class: Buffer Overflow

EPSS: 0.006 (44.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Denx U-boot — versions 2018.09
N/a — versions n/a

Weakness classification (CWE)

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

Public proof-of-concept exploits

f-secure-foundry/advisories

References

cve@mitre.org (mailing-list, x_refsource_MLIST, Exploit, Mailing List, Third Party Advisory, Mitigation)
cve@mitre.org (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2018-18440?: CVE-2018-18440 is a high-severity vulnerability in Denx U-Boot, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2018-11-20.
How severe is CVE-2018-18440?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2018-18440 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.