Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libssh2 | Libssh2 | < 1.8.1 |
| Fedoraproject | Fedora | 28 |
| Debian | Debian Linux | 8.0 |
| Netapp | Ontap Select Deploy Administration Utility | - |
| Opensuse | Leap | 15.0 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00040.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00003.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00102.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00103.htmlMailing ListThird Party Advisory
- http://packetstormsecurity.com/files/152136/Slackware-Security-Advisory-libssh2-PatchThird Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2019/03/18/3Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/107485Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3859Issue TrackingPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/03/msg00032.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/04/msg00006.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/07/msg00024.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://seclists.org/bugtraq/2019/Apr/25Mailing ListThird Party Advisory
- https://seclists.org/bugtraq/2019/Mar/25Mailing ListPatchThird Party Advisory
FAQ
What is CVE-2019-3859?
CVE-2019-3859 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 c...
How severe is CVE-2019-3859?
CVE-2019-3859 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-3859?
Check the references section above for vendor advisories and patch information. Affected products include: Libssh2 Libssh2, Fedoraproject Fedora, Debian Debian Linux, Netapp Ontap Select Deploy Administration Utility, Opensuse Leap.