Medium severity5.0NVD Advisory· Published Mar 25, 2019· Updated Jun 17, 2026

CVE-2019-3861

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Libssh2/Libssh22 versions
cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:libssh2:libssh2:*:*:*:*:*:*:*:*range: >=0.15,<=1.8.0
- (no CPE)range: <1.8.1
NetApp/Ontap Select Deploy Administration Utility
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
Debian/linux
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
OpenSUSE/Leap2 versions
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
osv-coords30 versions
pkg:rpm/opensuse/libssh2_org&distro=openSUSE%20Leap%2015.0 pkg:rpm/opensuse/libssh2_org&distro=openSUSE%20Leap%2015.1 pkg:rpm/opensuse/libssh2_org&distro=openSUSE%20Leap%2015.2 pkg:rpm/opensuse/libssh2_org&distro=openSUSE%20Tumbleweed pkg:rpm/suse/libssh2_org&distro=SUSE%20Enterprise%20Storage%204 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP1 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSS pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSS pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2011%20SP4 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3 pkg:rpm/suse/libssh2_org&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4 pkg:rpm/suse/libssh2_org&distro=SUSE%20OpenStack%20Cloud%207
< 1.8.0-lp150.3.3.1+ 29 more
- (no CPE)range: < 1.8.0-lp150.3.3.1
- (no CPE)range: < 1.9.0-lp151.6.6.1
- (no CPE)range: < 1.9.0-lp152.8.3.1
- (no CPE)range: < 1.9.0-3.6
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.9.0-4.13.1
- (no CPE)range: < 1.9.0-4.13.1
- (no CPE)range: < 1.9.0-4.13.1
- (no CPE)range: < 1.9.0-4.13.1
- (no CPE)range: < 1.2.9-4.2.12.5.1
- (no CPE)range: < 1.4.3-17.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.9.0-4.13.1
- (no CPE)range: < 1.4.3-17.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.9.0-4.13.1
- (no CPE)range: < 1.4.3-17.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
- (no CPE)range: < 1.4.3-20.3.1
The libssh2 Project/libssh2v5
Range: 1.8.1

Patches

Vulnerability mechanics

References

bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
www.libssh2.org/CVE-2019-3861.htmlnvdPatchVendor Advisory
lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlnvdMailing ListThird Party Advisory
lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlnvdThird Party Advisory
lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlnvdThird Party Advisory
security.netapp.com/advisory/ntap-20190327-0005/nvdThird Party Advisory
access.redhat.com/errata/RHSA-2019:2136nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/nvd
seclists.org/bugtraq/2019/Apr/25nvd
www.debian.org/security/2019/dsa-4431nvd
www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlnvd

News mentions

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cvss	0.325
epss	0.004
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000