Buffer overflow in Haxx Curl

CVE-2018-1000300

curl version curl 7.54.1 to and including curl 7.59.0 contains a CWE-122: Heap-based Buffer Overflow vulnerability in denial of service and more that can result in curl might overflow a heap based memory buffer when closing down an FTP con…

Vulnerability class: Buffer Overflow

EPSS: 0.049 (91.1th 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

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-1000300?
CVE-2018-1000300 is a critical-severity vulnerability in Haxx Curl, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2018-05-24.
How severe is CVE-2018-1000300?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-1000300 known to be exploited?
7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.