CVE-2019-3859

moderate-risk

Published 2019-03-21

An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.

Do I need to act?

1.2% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

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 9.1/10 Critical

NETWORK / LOW complexity

Affected Products (8)

Libssh2

Fedora

Debian Linux

Ontap Select Deploy Administration Utility

Leap

Affected Vendors

Debian Fedoraproject Netapp Opensuse Libssh2

References (40)

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

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.html

Mailing List http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00103.html

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

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

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

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859

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

Mailing List https://lists.debian.org/debian-lts-announce/2019/04/msg00006.html

https://lists.debian.org/debian-lts-announce/2019/07/msg00024.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

Third Party Advisory https://security.netapp.com/advisory/ntap-20190327-0005/

Third Party Advisory https://www.broadcom.com/support/fibre-channel-networking/security-advisories/br...

Third Party Advisory https://www.debian.org/security/2019/dsa-4431

Vendor Advisory https://www.libssh2.org/CVE-2019-3859.html

https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

and 20 more references

/ 100

moderate-risk

Severity 31/34 · Critical

Exploitability 3/34 · Minimal

Exposure 14/34 · Moderate