Description
An 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.
Metrics
CVSS 3.1 8.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| The libssh2 Project | libssh2 | 1.8.1 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.0, < V3.1.5 |
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
- http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2019/Sep/42Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/03/18/3Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/107485Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0679Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1175Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1652Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1791Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1943Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2399Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3855Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- https://seclists.org/bugtraq/2019/Apr/25Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Mar/25Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Sep/49Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190327-0005/Third Party Advisory
- https://support.apple.com/kb/HT210609Third Party Advisory
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767Third Party Advisory
- https://www.debian.org/security/2019/dsa-4431Third Party Advisory
- https://www.libssh2.org/CVE-2019-3855.htmlPatch, Vendor Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlPatch, Third Party Advisory
- 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
- http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-Updates.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2019/Sep/42Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/03/18/3Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/107485Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0679Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1175Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1652Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1791Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:1943Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2399Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3855Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
- https://seclists.org/bugtraq/2019/Apr/25Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Mar/25Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Sep/49Mailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20190327-0005/Third Party Advisory
- https://support.apple.com/kb/HT210609Third Party Advisory
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2019-767Third Party Advisory
- https://www.debian.org/security/2019/dsa-4431Third Party Advisory
- https://www.libssh2.org/CVE-2019-3855.htmlPatch, Vendor Advisory
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlPatch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
Timeline
- Published
- Mar 21, 2019
- Last modified
- Oct 14, 2026
- NVD status
- Modified