CVE-2019-3823
7.5
HIGH
CVSS 3.1
EPSS 1.6%
Description
libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.
How to fix CVE-2019-3823
To remediate CVE-2019-3823, upgrade the affected package to a fixed version below.
- —upgrade to 7.64.0-r0 or later
- —upgrade to 7.64.0-1 or later
Is CVE-2019-3823 being exploited?
Low — EPSS is 1.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 7.64.0-r0
- from 0, < 7.64.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |