CVE-2019-3863: Integer Overflow
First published: Mon Mar 11 2019(Updated: )
A flaw was found in libssh2 before 1.8.1. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out of bounds memory write error.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libssh2 Libssh2 | <1.8.1 | |
| Debian Debian Linux | =8.0 | |
| NetApp ONTAP Select Deploy administration utility | ||
| openSUSE Leap | =15.0 | |
| openSUSE Leap | =42.3 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Server Aus | =7.6 | |
| Redhat Enterprise Linux Server Eus | =7.6 | |
| Redhat Enterprise Linux Server Tus | =7.6 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| debian/libssh2 | 1.8.0-2.1 1.8.0-2.1+deb10u1 1.9.0-2 1.10.0-3 1.11.0-2 |
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Reference Links
- https://www.libssh2.org/CVE-2019-3863.html
- https://libssh2.org/1.8.0-CVE/CVE-2019-3863.patch
- https://github.com/libssh2/libssh2/pull/315
- https://security-tracker.debian.org/tracker/CVE-2019-3863
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- https://access.redhat.com/errata/RHSA-2019:0679
- https://access.redhat.com/errata/RHSA-2019:1175
- https://access.redhat.com/errata/RHSA-2019:1652
- https://access.redhat.com/errata/RHSA-2019:1791
- https://access.redhat.com/errata/RHSA-2019:1943
- https://access.redhat.com/errata/RHSA-2019:2399
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3863
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://seclists.org/bugtraq/2019/Apr/25
- https://security.netapp.com/advisory/ntap-20190327-0005/
- https://www.debian.org/security/2019/dsa-4431
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://github.com/libssh2/libssh2/commit/dc109a7f518757741590bb993c0c8412928ccec2
- https://www.openwall.com/lists/oss-security/2019/03/18/3
- https://libssh2.org/1.8.0-CVE/CVE-2019-3863.txt
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690246
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690247
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690248
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1690408
- https://bugzilla.redhat.com/show_bug.cgi?id=1687313
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
Frequently Asked Questions
What is CVE-2019-3863?
CVE-2019-3863 is a vulnerability found in libssh2 before version 1.8.1.
How severe is CVE-2019-3863?
CVE-2019-3863 has a severity rating of 8.8 (high).
How can I fix CVE-2019-3863?
To fix CVE-2019-3863, update libssh2 to version 1.8.1 or later.
Which software is affected by CVE-2019-3863?
The software affected by CVE-2019-3863 includes libssh2, Debian Linux, NetApp ONTAP Select Deploy administration utility, openSUSE Leap, and Redhat Enterprise Linux.
Where can I find more information about CVE-2019-3863?
More information about CVE-2019-3863 can be found at the following links: [Link 1](https://github.com/libssh2/libssh2/commit/dc109a7f518757741590bb993c0c8412928ccec2), [Link 2](https://www.openwall.com/lists/oss-security/2019/03/18/3), [Link 3](https://libssh2.org/1.8.0-CVE/CVE-2019-3863.txt)
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