Integer overflow in Haxx Curl

CVE-2020-19909

Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error.

Vulnerability class: Integer Overflow

EPSS: 0.004 (34.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

  • Haxx Curl — versions 7.65.2
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-19909?
CVE-2020-19909 is a low-severity vulnerability in Haxx Curl, classified under Integer Overflow or Wraparound. CVSS score: 3.3/10. Published 2023-08-22.
How severe is CVE-2020-19909?
Low severity. CVSS v3 base score is 3.3 out of 10.
Is CVE-2020-19909 known to be exploited?
5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.