Medium severity · published Jul 9, 2021
CVE-2021-30121
Semi-authenticated local file inclusion The contents of arbitrary files can be returned by the webserver Example request:…
6.5
CVSS
5%
EPSS
No
On KEV
Description
Semi-authenticated local file inclusion The contents of arbitrary files can be returned by the webserver Example request: `https://x.x.x.x/KLC/js/Kaseya.SB.JS/js.aspx?path=C:\Kaseya\WebPages\dl.asp` A valid sessionId is required but can be easily obtained via CVE-2021-30118
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.0% · higher than 92% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VS
Vsa · Kaseya
before 9.5.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30121
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30121
Patch
https://csirt.divd.nl/2021/07/07/Kaseya-Limited-Disclosure/
Exploit
https://csirt.divd.nl/CVE-2021-30121
Patch
https://csirt.divd.nl/DIVD-2021-00011
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