What’s Vulnerable › Vulnerabilities

CVE-2019-3857

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-03-25 · updated 2026-10-14
• Weakness: CWE-190

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 SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. 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.

Affected products

• Debian Linux: 8.0, 9.0
• Fedoraproject Fedora: 28
• libssh2: from 1.2.8 through 1.8.0
• NetApp ONTAP Select Deploy administration utility: all versions
• openSUSE Leap: 15.0, 42.3
• Oracle Corporation PeopleSoft Enterprise PT PeopleTools: 8.56, 8.57
• Red Hat Enterprise Linux: 8.0
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Server Aus: 7.6
• RedHat Enterprise Linux Server Eus: 7.6
• RedHat Enterprise Linux Server Tus: 7.6
• RedHat Enterprise Linux Workstation: 7.0

References

• http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html
• https://access.redhat.com/errata/RHSA-2019:0679
• https://access.redhat.com/errata/RHSA-2019:1175
• https://access.redhat.com/errata/RHSA-2019:1652
• https://access.redhat.com/errata/RHSA-2019:1791
• https://access.redhat.com/errata/RHSA-2019:1943
• https://access.redhat.com/errata/RHSA-2019:2399
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3857
• https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5DK6VO2CEUTAJFYIKWNZKEKYMYR3NO2O/
• https://seclists.org/bugtraq/2019/Apr/25

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