CVE-2019-3859
First published: Wed Mar 20 2019(Updated: )
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 | |
| libssh2 | <1.8.1 | |
| Fedoraproject Fedora | =28 | |
| Fedoraproject Fedora | =29 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| NetApp ONTAP Select Deploy | ||
| openSUSE | =15.0 | |
| openSUSE | =42.3 |
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Reference Links
- https://www.libssh2.org/CVE-2019-3859.html
- https://libssh2.org/1.8.0-CVE/CVE-2019-3859.patch
- https://github.com/libssh2/libssh2/pull/315
- https://security-tracker.debian.org/tracker/CVE-2019-3859
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00103.html
- http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html
- http://www.openwall.com/lists/oss-security/2019/03/18/3
- http://www.securityfocus.com/bid/107485
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
- https://lists.debian.org/debian-lts-announce/2019/04/msg00006.html
- https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- https://seclists.org/bugtraq/2019/Apr/25
- https://seclists.org/bugtraq/2019/Mar/25
- https://security.netapp.com/advisory/ntap-20190327-0005/
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767
- https://www.debian.org/security/2019/dsa-4431
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
Frequently Asked Questions
What is CVE-2019-3859?
CVE-2019-3859 is a vulnerability found in libssh2 before version 1.8.1.
What is the severity of CVE-2019-3859?
The severity of CVE-2019-3859 is critical with a CVSS score of 9.1.
How does CVE-2019-3859 affect libssh2?
CVE-2019-3859 can cause an out of bounds read on the _libssh2_packet_require and _libssh2_packet_requirev functions in libssh2.
What is the impact of CVE-2019-3859?
An attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
How can CVE-2019-3859 be fixed?
To fix CVE-2019-3859, users should upgrade to libssh2 version 1.8.1 or later.
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