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.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861 Issue Tracking, Patch, Third Party Advisory
- https://www.libssh2.org/CVE-2019-3861.html Patch, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861 Issue Tracking, Patch, Third Party Advisory
- https://www.libssh2.org/CVE-2019-3861.html Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.1 · libssh2, debian, netappNVD modified 2026-10-14 07:16
Affected (CPE criteria) 5
cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
References 23
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2136
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html Third 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.html Patch, Vendor Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html Mailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2136
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3861 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html Third 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.html Patch, Vendor Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html