Vulnerability in Kioware Server
CVE-2018-18435
KioWare Server version 4.9.6 and older installs by default to "C:\kioware_com" with weak folder permissions granting any user full permission "Everyone: (F)" to the contents of the directory and it's sub-folders. In addition, the program installs a service called "KWSService" which runs as "Localsystem", this will allow any user to escalate privileges to "NT AUTHORITY\SYSTEM" by substituting the service's binary with a malicious one.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.014 (71.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- packetstormsecurity.com/files/151031/KioWare-Server-4.9.6-Privilege-Escalation… (Exploit, VDB Entry, Third Party Advisory)
- www.exploit-db.com/exploits/46093/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- m.kioware.com/news/kioware-press-releases/kioware_server_security_patch_update (Patch, Vendor Advisory)
- www.kioware.com/patch.aspx (Patch, Vendor Advisory)
- github.com/active-labs/Advisories/blob/master/2019/ACTIVE-2019-002.md
Frequently asked questions
- What is CVE-2018-18435?
- CVE-2018-18435 is a high-severity vulnerability in Kioware Server, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 7.8/10. Published 2019-03-21.
- How severe is CVE-2018-18435?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2018-18435 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.