Use After Free in Haxx Curl

CVE-2016-8618

The libcurl API function called `curl_maprintf()` before version 7.51.0 can be tricked into doing a double-free due to an unsafe `size_t` multiplication, on systems using 32 bit `size_t` variables.

Vulnerability class: Use-After-Free

EPSS: 0.046 (90.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2016-8618?
CVE-2016-8618 is a medium-severity vulnerability in Haxx Curl, classified under Use After Free. CVSS score: 5.3/10. Published 2018-07-31.
How severe is CVE-2016-8618?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2016-8618 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.