High severity · published Jan 26, 2021
CVE-2021-3317
KLog Server through 2.4.1 allows authenticated command injection
8.8
CVSS
41.4%
EPSS
No
On KEV
Description
KLog Server through 2.4.1 allows authenticated command injection. async.php calls shell_exec() on the original value of the source parameter.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)41.4% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KS
Klog Server · Klogserver
through 2.4.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3317
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3317
Exploit
http://packetstormsecurity.com/files/161208/Klog-Server-2.4.1-Command-Injection.html
Exploit
https://docs.unsafe-inline.com/0day/klog-server-authenticated-command-injection
More from Klog Server
9.8
CVE-2020-35729
KLog Server 2.4.1 allows OS command injection via shell metacharacters in the actions/authenticate.php user parameter