VULNERABILITY INTELLIGENCE

CVE-2019-3823

CVSS score4.3 MEDIUM
EPSS probability4.12%
CISA KEVNot currently listed
Published2019-02-06
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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.

Weakness classification

  • CWE-125: Out-of-bounds Read

Primary references