| Name | CVE-2019-3823 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1672-1, DSA-4386-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| curl (PTS) | jessie, jessie (lts) | 7.38.0-4+deb8u28 | fixed |
| stretch (security) | 7.52.1-5+deb9u16 | fixed |
| stretch (lts), stretch | 7.52.1-5+deb9u22 | fixed |
| buster, buster (lts) | 7.64.0-4+deb10u10 | fixed |
| buster (security) | 7.64.0-4+deb10u9 | fixed |
| bullseye | 7.74.0-1.3+deb11u13 | fixed |
| bullseye (security) | 7.74.0-1.3+deb11u14 | fixed |
| bookworm | 7.88.1-10+deb12u8 | fixed |
| bookworm (security) | 7.88.1-10+deb12u5 | fixed |
| sid, trixie | 8.11.1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| curl | source | wheezy | (not affected) | | | |
| curl | source | jessie | 7.38.0-4+deb8u14 | | DLA-1672-1 | |
| curl | source | stretch | 7.52.1-5+deb9u9 | | DSA-4386-1 | |
| curl | source | (unstable) | 7.64.0-1 | | | |
Notes
https://curl.haxx.se/docs/CVE-2019-3823.html
Fixed by: https://github.com/curl/curl/commit/39df4073e5413fcdbb5a38da0c1ce6f1c0ceb484
Introduced by: https://github.com/curl/curl/commit/2766262a68688c1dd8143f9c4be84b46c408b70a
[wheezy] - curl <not-affected> (Vulnerabe code not present)