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.
Metrics
CVSS 3.0 7.5/10
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| The curl Project | curl | 7.64.0 |
References
- http://www.securityfocus.com/bid/106950Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:3701
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3823Exploit, Issue Tracking, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-936080.pdf
- https://curl.haxx.se/docs/CVE-2019-3823.htmlPatch, Vendor Advisory
- https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
- https://security.gentoo.org/glsa/201903-03Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190315-0001/Exploit, Third Party Advisory
- https://usn.ubuntu.com/3882-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4386Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- http://www.securityfocus.com/bid/106950Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:3701
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3823Exploit, Issue Tracking, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-936080.pdf
- https://curl.haxx.se/docs/CVE-2019-3823.htmlPatch, Vendor Advisory
- https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
- https://security.gentoo.org/glsa/201903-03Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190315-0001/Exploit, Third Party Advisory
- https://usn.ubuntu.com/3882-1/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4386Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.htmlPatch, Third Party Advisory
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Timeline
- Published
- Feb 6, 2019
- Last modified
- Jun 17, 2026
- NVD status
- Modified