CVE-2019-3855

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Summary

CVECVE-2019-3855
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-03-21 21:29:00 UTC
Updated2026-10-14 07:16:51 UTC
DescriptionAn integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem Types: CWE-190 | CWE-787 | CWE-190 CWE-190 | CWE-787 CWE-787

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.0[email protected]Secondary7.5HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
3.0CNADECLARED7.5HIGHCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
2.0[email protected]Primary9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Apple Xcode All All All All
Operating System Debian Debian Linux 8.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 28 All All All
Operating System Fedoraproject Fedora 29 All All All
Operating System Fedoraproject Fedora 30 All All All
Application Libssh2 Libssh2 All All All All
Application Netapp Ontap Select Deploy Administration Utility - All All All
Operating System Opensuse Leap 42.3 All All All
Application Oracle Peoplesoft Enterprise Peopletools 8.56 All All All
Application Oracle Peoplesoft Enterprise Peopletools 8.57 All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux Desktop 7.0 All All All
Operating System Redhat Enterprise Linux Server 7.0 All All All
Operating System Redhat Enterprise Linux Server Aus 7.6 All All All
Operating System Redhat Enterprise Linux Server Eus 7.6 All All All
Operating System Redhat Enterprise Linux Server Tus 7.6 All All All
Operating System Redhat Enterprise Linux Workstation 7.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA The Libssh2 Project Libssh2 affected 1.8.1 Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
[SECURITY] Fedora 29 Update: libssh2-1.8.1-1.fc29 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Broadcom Inc. | Connecting Everything af854a3a-2127-422b-91ae-364da2661108 www.broadcom.com Third Party Advisory
Slackware Security Advisory - libssh2 Updates ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Third Party Advisory, VDB Entry
[SECURITY] Fedora 28 Update: libssh2-1.8.1-1.fc28 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
libssh2 Multiple Security Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
[security-announce] openSUSE-SU-2019:1075-1: moderate: Security update f af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Mailing List, Third Party Advisory
[SECURITY] Fedora 29 Update: libssh2-1.9.0-1.fc29 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Bugtraq: [SECURITY] [DSA 4431-1] libssh2 security update af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
libssh2 Security Advisory: CVE-2019-3855 af854a3a-2127-422b-91ae-364da2661108 www.libssh2.org Patch, Vendor Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
oss-security - [SECURITY ADVISORIES] libssh2 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Patch, Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[security-announce] openSUSE-SU-2019:1109-1: moderate: Security update f af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org Third Party Advisory
Bugtraq: [slackware-security] libssh2 (SSA:2019-077-01) af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
Bugtraq: APPLE-SA-2019-9-26-7 Xcode 11.0 af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
Oracle Critical Patch Update - October 2019 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
[SECURITY] [DLA 1730-1] libssh2 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
About the security content of Xcode 11.0 - Apple Support af854a3a-2127-422b-91ae-364da2661108 support.apple.com Third Party Advisory
Full Disclosure: APPLE-SA-2019-9-26-7 Xcode 11.0 af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
1687303 – (CVE-2019-3855) CVE-2019-3855 libssh2: Integer overflow in transport read resulting in out of bounds write af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
Debian -- Security Information -- DSA-4431-1 libssh2 af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
[SECURITY] Fedora 30 Update: libssh2-1.9.0-1.fc30 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
March 2019 Libssh2 Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
[SECURITY] Fedora 28 Update: libssh2-1.8.1-1.fc28 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 29 Update: libssh2-1.9.0-1.fc29 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 30 Update: libssh2-1.9.0-1.fc30 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 29 Update: libssh2-1.8.1-1.fc29 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 296075 Oracle Solaris 11.4 Support Repository Update (SRU) 21.69.0 Missing (CPUAPR2020)
  • 377077 Alibaba Cloud Linux Security Update for libssh2 (ALINUX2-SA-2019:0018)
  • 378237 Virtuozzo Linux Security Update for libssh2-docs (VZLSA-2019:1652)
  • 500318 Alpine Linux Security Update for libssh2
  • 504085 Alpine Linux Security Update for libssh2
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 750528 OpenSUSE Security Update for libssh2_org (openSUSE-SU-2020:2129-1)
  • 750530 OpenSUSE Security Update for libssh2_org (openSUSE-SU-2020:2126-1)

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