CVE-2019-3862
criticalAn 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 par…
Vendor / product: Libssh2 — libssh2
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.
CVSS
9.1
9.1 (CVSS v3.0)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Severity source: NVD CVSS v3.0 (nvd@nist.gov)
Timeline (UTC)
Published: 2019-03-21 16:01
Modified: 2026-10-14 07:16
NVD status: Modified
Last synced 2 days ago
Verified against the source API 2026-10-27 07:06 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
libssh2 / libssh2 <1.8.1
fedoraproject / fedora 29
debian / debian_linux 8.0
netapp / ontap_select_deploy_administration_utility all versions
opensuse / leap 42.3
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.libssh2.org/CVE-2019-3862.html
Vendor advisory: https://www.libssh2.org/CVE-2019-3862.html
Patch / mitigation: http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html
Patch / mitigation: http://www.openwall.com/lists/oss-security/2019/03/18/3
Patch / mitigation: https://seclists.org/bugtraq/2019/Mar/25
Patch / mitigation: http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.html
Patch / mitigation: http://www.openwall.com/lists/oss-security/2019/03/18/3
Patch / mitigation: https://seclists.org/bugtraq/2019/Mar/25
References
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html secalert@redhat.com
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html secalert@redhat.com
- http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.ht... secalert@redhat.com
- http://www.openwall.com/lists/oss-security/2019/03/18/3 secalert@redhat.com
- http://www.securityfocus.com/bid/107485 secalert@redhat.com
- https://access.redhat.com/errata/RHSA-2019:1884 secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3862 secalert@redhat.com
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html secalert@redhat.com
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/m... secalert@redhat.com
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/m... secalert@redhat.com
- https://seclists.org/bugtraq/2019/Apr/25 secalert@redhat.com
- https://seclists.org/bugtraq/2019/Mar/25 secalert@redhat.com
- https://security.netapp.com/advisory/ntap-20190327-0005/ secalert@redhat.com
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-secu... secalert@redhat.com
- https://www.debian.org/security/2019/dsa-4431 secalert@redhat.com
- https://www.libssh2.org/CVE-2019-3862.html secalert@redhat.com
- https://www.oracle.com/security-alerts/cpujan2020.html secalert@redhat.com
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html secalert@redhat.com
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html af854a3a-2127-422b-91ae-364da2661108
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html af854a3a-2127-422b-91ae-364da2661108
- http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.ht... af854a3a-2127-422b-91ae-364da2661108
- http://www.openwall.com/lists/oss-security/2019/03/18/3 af854a3a-2127-422b-91ae-364da2661108
- http://www.securityfocus.com/bid/107485 af854a3a-2127-422b-91ae-364da2661108
- https://access.redhat.com/errata/RHSA-2019:1884 af854a3a-2127-422b-91ae-364da2661108
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3862 af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:06 UTC · record ↗