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Vulnerability Details : CVE-2019-3855

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.
Publish Date : 2019-03-21 Last Update Date : 2020-10-15
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Execute CodeOverflow
CWE ID 787

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:0679: libssh2 security update (Important) oval:com.redhat.rhsa:def:20190679 unix
RHSA-2019:1175: virt:rhel security update (Important) oval:com.redhat.rhsa:def:20191175 unix
RHSA-2019:1652: libssh2 security update (Important) oval:com.redhat.rhsa:def:20191652 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-3855

# Product Type Vendor Product Version Update Edition Language
1 Application Apple Xcode * * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
3 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 28 * * * Version Details Vulnerabilities
5 OS Fedoraproject Fedora 29 * * * Version Details Vulnerabilities
6 OS Fedoraproject Fedora 30 * * * Version Details Vulnerabilities
7 Application Libssh2 Libssh2 * * * * Version Details Vulnerabilities
8 Application Netapp Ontap Select Deploy Administration Utility - * * * Version Details Vulnerabilities
9 OS Opensuse Leap 42.3 * * * Version Details Vulnerabilities
10 Application Oracle Peoplesoft Enterprise Peopletools 8.56 * * * Version Details Vulnerabilities
11 Application Oracle Peoplesoft Enterprise Peopletools 8.57 * * * Version Details Vulnerabilities
12 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities
13 OS Redhat Enterprise Linux Desktop 7.0 * * * Version Details Vulnerabilities
14 OS Redhat Enterprise Linux Server 7.0 * * * Version Details Vulnerabilities
15 OS Redhat Enterprise Linux Server Aus 7.6 * * * Version Details Vulnerabilities
16 OS Redhat Enterprise Linux Server Eus 7.6 * * * Version Details Vulnerabilities
17 OS Redhat Enterprise Linux Server Tus 7.6 * * * Version Details Vulnerabilities
18 OS Redhat Enterprise Linux Workstation 7.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Apple Xcode 1
Debian Debian Linux 2
Fedoraproject Fedora 3
Libssh2 Libssh2 1
Netapp Ontap Select Deploy Administration Utility 1
Opensuse Leap 1
Oracle Peoplesoft Enterprise Peopletools 2
Redhat Enterprise Linux 1
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Server Aus 1
Redhat Enterprise Linux Server Eus 1
Redhat Enterprise Linux Server Tus 1
Redhat Enterprise Linux Workstation 1

- References For CVE-2019-3855
FULLDISC 20190927 APPLE-SA-2019-9-26-7 Xcode 11.0 CONFIRM
BUGTRAQ 20190927 APPLE-SA-2019-9-26-7 Xcode 11.0[email protected]/message/M7IF3LNHOA75O4WZWIHJLIRMA5LJUED3/
FEDORA FEDORA-2019-5885663621
REDHAT RHSA-2019:2399[email protected]/message/6LUNHPW64IGCASZ4JQ2J5KDXNZN53DWW/
FEDORA FEDORA-2019-9d85600fc7
REDHAT RHSA-2019:1943
REDHAT RHSA-2019:1791
REDHAT RHSA-2019:1652
BUGTRAQ 20190415 [SECURITY] [DSA 4431-1] libssh2 security update
REDHAT RHSA-2019:1175
SUSE openSUSE-SU-2019:1109[email protected]/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
FEDORA FEDORA-2019-3348cb4934
SUSE openSUSE-SU-2019:1075
REDHAT RHSA-2019:0679
MLIST [debian-lts-announce] 20190326 [SECURITY] [DLA 1730-1] libssh2 security update CONFIRM[email protected]/message/XCWEA5ZCLKRDUK62QVVYMFWLWKOPX3LO/
FEDORA FEDORA-2019-f31c14682f
MLIST [oss-security] 20190318 [SECURITY ADVISORIES] libssh2
BID 107485 libssh2 Multiple Security Vulnerabilities Release Date:2019-04-19 CONFIRM
BUGTRAQ 20190319 [slackware-security] libssh2 (SSA:2019-077-01)

- Metasploit Modules Related To CVE-2019-3855

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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