THREATPORT/VULNERABILITY/CVE-2017-9811
CRITICAL SEVERITY

CVE-2017-9811

Anti Virus For Linux Server vulnerability

CVSS
9.8
EPSS
10.5%
EPSS pct
95th
Exploited
No known
The kluser is able to interact with the kav4fs-control binary in Kaspersky Anti-Virus for Linux File Server before Maintenance Pack 2 Critical Fix 4 (version 8.0.4.312). By abusing the quarantine read and write operations, it is possible to elevate the privileges to root.
Affected vendor
Kaspersky
Affected product
Anti Virus For Linux Server
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
Published
2017-07-17

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 10.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2017-9811

  • Confirm whether Kaspersky Anti Virus For Linux Server is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-9811.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-9811

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-9811 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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