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
- Haxx Curl
- The Curl Project — versions 7.51.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- secalert@redhat.com (x_refsource_CONFIRM)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
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.