Red Hat libssh
At a glance
- Source
- NVD
- EPSS
- EPSS 3.14 % · percentile 88 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
Description
A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.
Weaknesses (CWE)
- CWE-476 — NULL Pointer Dereference
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLSWHBQ3EPKGTGLQNH554Z746BJ3C554/
- https://usn.ubuntu.com/4327-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2A7BIFKUYIYKTY7FX4BEWVC2OHS5DPOU/
- https://www.oracle.com/security-alerts/cpuoct2020.html
- https://www.libssh.org/security/advisories/CVE-2020-1730.txt
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730
- https://security.netapp.com/advisory/ntap-20200424-0001/
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | redhat |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | MEDIUM 5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-12576
- GCVE · GCVE-0-2020-1730
CERT-FR advisories
- CERTFR-2020-AVI-664 — Multiples vulnérabilités dans Oracle MySQL · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*≥ 0.8.0 < 0.8.9cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*≥ 0.9.0 < 0.9.4cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:*≤ 8.0.21
Affected products
| Product | Versions |
|---|---|
| Red Hat · libssh | affected libssh versions before 0.8.9 ; affected libssh versions before 0.9.4 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |