CVE-2019-3855

high-risk

Published 2019-03-21

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.

Do I need to act?

16.2% chance of exploitation in next 30 days

EPSS score — higher than 84% of all CVEs

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 8.8/10 High

NETWORK / LOW complexity

Affected Products (18)

Libssh2

Fedora

Debian Linux

Ontap Select Deploy Administration Utility

Enterprise Linux

Enterprise Linux Desktop

Enterprise Linux Server

Enterprise Linux Server Aus

Enterprise Linux Server Eus

Enterprise Linux Server Tus

Enterprise Linux Workstation

Leap

Xcode

Peoplesoft Enterprise Peopletools

Affected Vendors

Debian Redhat Apple Oracle Fedoraproject Netapp Opensuse Libssh2

References (54)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html

Third Party Advisory http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html

Third Party Advisory http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-...

Mailing List http://seclists.org/fulldisclosure/2019/Sep/42

Mailing List http://www.openwall.com/lists/oss-security/2019/03/18/3

Third Party Advisory http://www.securityfocus.com/bid/107485

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0679

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:1175

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:1652

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:1791

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:1943

Third Party Advisory https://access.redhat.com/errata/RHSA-2019:2399

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3855

Mailing List https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Mailing List https://seclists.org/bugtraq/2019/Apr/25

Mailing List https://seclists.org/bugtraq/2019/Mar/25

and 34 more references

/ 100

high-risk

Severity 30/34 · Critical

Exploitability 13/34 · Low

Exposure 19/34 · Moderate