Medium severity · published Apr 13, 2020
CVE-2020-1730
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
5.3
CVSS
3.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CB
Cloud Backup · Netapp
All versions, or not specified · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
FE
Fedora · Fedoraproject
31; 32 · source: NVD
LI
Libssh · Libssh
0.8.0 before 0.8.9; 0.9.0 before 0.9.4 · source: NVD
MW
Mysql Workbench · Oracle
through 8.0.21 · source: NVD
UL
Ubuntu Linux · Canonical
18.04; 19.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-1730
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-1730
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2A7BIFKUYIYKTY7FX4BEWVC2OHS5DPOU/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLSWHBQ3EPKGTGLQNH554Z746BJ3C554/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200424-0001/
Third Party Advisory
https://usn.ubuntu.com/4327-1/
Vendor Advisory
https://www.libssh.org/security/advisories/CVE-2020-1730.txt
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