Buffer overflow in Haxx Libcurl

CVE-2017-1000254

libcurl may read outside of a heap allocated buffer when doing FTP. When libcurl connects to an FTP server and successfully logs in (anonymous or not), it asks the server for the current directory with the `PWD` command. The server then re…

Vulnerability class: Buffer Overflow

EPSS: 0.013 (80.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

  • Haxx Libcurl — versions 7.7, 7.7.1, 7.7.2
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2017-1000254?
CVE-2017-1000254 is a high-severity vulnerability in Haxx Libcurl, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-10-06.
How severe is CVE-2017-1000254?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2017-1000254 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.