CVE-2018-16840
9.8
CRITICAL
CVSS 3.1
EPSS 0.29%
Description
A heap use-after-free flaw was found in curl versions from 7.59.0 through 7.61.1 in the code related to closing an easy handle. When closing and cleaning up an 'easy' handle in the `Curl_close()` function, the library code first frees a struct (without nulling the pointer) and might then subsequently erroneously write to a struct field within that already freed struct.
How to fix CVE-2018-16840
To remediate CVE-2018-16840, upgrade the affected package to a fixed version below.
- —upgrade to 7.62.0-r0 or later
- —upgrade to 7.62.0-1 or later
Is CVE-2018-16840 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 7.62.0-r0
- from 0, < 7.62.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |