CVE-2019-3861

Name: CVE-2019-3861
Creator: NVD / NIST
Published: 2019-03-25T19:29:01.93+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 5.12%

Last modified Jun 17, 2026

CVE-2019-3861 is a vulnerability of currently unknown severity. An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length 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.. EPSS estimates a 5.12% chance of exploitation in the next 30 days.

Description

An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length 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.

Metrics

EPSS Probability

5.12%

91.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Libssh2	Libssh2	>= 0.15, <= 1.8.0
Debian	Debian Linux	8.0
Netapp	Ontap Select Deploy Administration Utility	All versions
Opensuse	Leap	15.0
Opensuse	Leap	42.3

References

http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:2136
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
https://seclists.org/bugtraq/2019/Apr/25
https://security.netapp.com/advisory/ntap-20190327-0005/Third Party Advisory
https://www.debian.org/security/2019/dsa-4431
https://www.libssh2.org/CVE-2019-3861.htmlPatch, Vendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlThird Party Advisory
https://access.redhat.com/errata/RHSA-2019:2136
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
https://seclists.org/bugtraq/2019/Apr/25
https://security.netapp.com/advisory/ntap-20190327-0005/Third Party Advisory
https://www.debian.org/security/2019/dsa-4431
https://www.libssh2.org/CVE-2019-3861.htmlPatch, Vendor Advisory
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

Timeline

Published: Mar 25, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-3861?

How severe is CVE-2019-3861?

Severity scoring for CVE-2019-3861 is pending analysis. The EPSS model estimates a 5.12% probability of exploitation in the next 30 days.

How do I fix CVE-2019-3861?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-3861?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST