CVE-2019-3823
First published: Tue Jan 29 2019(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Haxx Libcurl | >=7.34.0<7.64.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| Debian Debian Linux | =9.0 | |
| NetApp Clustered Data ONTAP | ||
| Oracle Communications Operations Monitor | =3.4 | |
| Oracle Communications Operations Monitor | =4.0 | |
| Oracle HTTP Server | =12.2.1.3.0 | |
| Oracle Secure Global Desktop | =5.4 | |
| redhat/curl | <7.64.0 | 7.64.0 |
| ubuntu/curl | <7.58.0-2ubuntu3.6 | 7.58.0-2ubuntu3.6 |
| ubuntu/curl | <7.61.0-1ubuntu2.3 | 7.61.0-1ubuntu2.3 |
| ubuntu/curl | <7.64.0-1ubuntu1 | 7.64.0-1ubuntu1 |
| ubuntu/curl | <7.64.0-1ubuntu1 | 7.64.0-1ubuntu1 |
| ubuntu/curl | <7.64.0-1ubuntu1 | 7.64.0-1ubuntu1 |
| ubuntu/curl | <7.64.0-1ubuntu1 | 7.64.0-1ubuntu1 |
| ubuntu/curl | <7.64.0-1ubuntu1 | 7.64.0-1ubuntu1 |
| ubuntu/curl | <7.35.0-1ubuntu2.20 | 7.35.0-1ubuntu2.20 |
| ubuntu/curl | <7.64.0 | 7.64.0 |
| ubuntu/curl | <7.47.0-1ubuntu2.12 | 7.47.0-1ubuntu2.12 |
| debian/curl | 7.74.0-1.3+deb11u12 7.74.0-1.3+deb11u11 7.88.1-10+deb12u6 7.88.1-10+deb12u5 8.8.0-4 8.9.1-2 |
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Reference Links
- http://www.securityfocus.com/bid/106950
- https://access.redhat.com/errata/RHSA-2019:3701
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3823
- https://cert-portal.siemens.com/productcert/pdf/ssa-936080.pdf
- https://curl.haxx.se/docs/CVE-2019-3823.html
- https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f@%3Cdevnull.infra.apache.org%3E
- https://security.gentoo.org/glsa/201903-03
- https://security.netapp.com/advisory/ntap-20190315-0001/
- https://usn.ubuntu.com/3882-1/
- https://www.debian.org/security/2019/dsa-4386
- https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- https://launchpad.net/bugs/cve/CVE-2019-3823
- https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f%40%3Cdevnull.infra.apache.org%3E
- https://github.com/curl/curl/commit/2766262a68
- https://github.com/curl/curl/commit/39df4073
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1672906
- https://access.redhat.com/security/cve/cve-2019-3823
- https://bugzilla.redhat.com/show_bug.cgi?id=1670256
- https://github.com/curl/curl/commit/39df4073e5413fcdbb5a38da0c1ce6f1c0ceb484
- https://github.com/curl/curl/commit/2766262a68688c1dd8143f9c4be84b46c408b70a
- https://security-tracker.debian.org/tracker/CVE-2019-3823
- https://ubuntu.com/security/notices/USN-3882-1
- https://www.cve.org/CVERecord?id=CVE-2019-3823
- https://nvd.nist.gov/vuln/detail/CVE-2019-3823
- https://ubuntu.com/security/CVE-2019-3823
Frequently Asked Questions
What is CVE-2019-3823?
CVE-2019-3823 is a vulnerability in libcurl versions from 7.34.0 to before 7.64.0 that allows for a heap out-of-bounds read in the code handling the end-of-response for SMTP.
How severe is CVE-2019-3823?
CVE-2019-3823 has a severity level of 7.5 (High).
Which software versions are affected by CVE-2019-3823?
The affected software versions include libcurl from 7.34.0 to before 7.64.0, curl 7.64.0-4+deb10u2, curl 7.64.0-4+deb10u7, curl 7.74.0-1.3+deb11u9, curl 7.74.0-1.3+deb11u10, curl 7.88.1-10+deb12u3, curl 7.88.1-10+deb12u4, and curl 8.4.0-2.
How can I fix CVE-2019-3823?
To fix CVE-2019-3823, it is recommended to update libcurl to version 7.64.0 or later.
Where can I find more information about CVE-2019-3823?
You can find more information about CVE-2019-3823 at the official CVE page: https://curl.haxx.se/docs/CVE-2019-3823.html
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