CVE-2019-3862 Information disclosure in libssh2
A remote attacker compromising an SSH server can cause a denial of service or read client memory via a flaw in libssh2 packet parsing.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-3862?
CVE-2019-3862 is a high-severity vulnerability in Debian Debian Linux, published on 20 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Which versions are affected by CVE-2019-3862?
It affects 5 products.
Linux distribution packages (16)
libssh2 Red Hat:enterprise_linux:7::client | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-devel Red Hat:enterprise_linux:7::client | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-docs Red Hat:enterprise_linux:7::client | All versions | 0:1.4.3-12.el7_6.3 |
libssh2 Red Hat:enterprise_linux:7::computenode | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-docs Red Hat:enterprise_linux:7::computenode | All versions | 0:1.4.3-12.el7_6.3 |
libssh2 Red Hat:enterprise_linux:7::server | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-devel Red Hat:enterprise_linux:7::server | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-docs Red Hat:enterprise_linux:7::server | All versions | 0:1.4.3-12.el7_6.3 |
libssh2 Red Hat:enterprise_linux:7::workstation | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-devel Red Hat:enterprise_linux:7::workstation | All versions | 0:1.4.3-12.el7_6.3 |
libssh2-docs Red Hat:enterprise_linux:7::workstation | All versions | 0:1.4.3-12.el7_6.3 |
Products include Debian Debian Linux, Fedoraproject Fedora, Libssh2 Libssh2, Netapp Ontap Select Deploy Administration Utility, Opensuse Leap.
How do I fix CVE-2019-3862?
Upgrade to a fixed version.
Is CVE-2019-3862 being exploited?
There is no known exploitation of CVE-2019-3862 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2019-3862, DEBIAN-CVE-2019-3862, GHSA-5c3r-rx33-wr79, RHSA-2019:1884, UBUNTU-CVE-2019-3862.