PT-2017-2844 · Kaspersky · Kaspersky Anti-Virus For Linux File Server

Leandro Barragan + 1 · Published 2017-04-03 · Updated 2017-08-12 · CVE-2017-9811

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Kaspersky Anti-Virus for Linux File Server versions prior to 8.0.4.312

Description The issue exists due to insufficient input validation during quarantine read and write operations in the kav4fs-control service. This can be exploited by a remote attacker with kluser privileges to elevate their privileges to root.

Recommendations For versions prior to 8.0.4.312, update to version 8.0.4.312 or later to resolve the issue. As a temporary workaround, consider restricting access to the kav4fs-control binary to minimize the risk of exploitation.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2017-02124

CVE-2017-9811

Affected Products

Kaspersky Anti-Virus For Linux File Server

References · 9

• 🔥 https://coresecurity.com/advisories/kaspersky-anti-virus-file-server-multiple-vulnerabilities · Exploit
• 🔥 http://packetstormsecurity.com/files/143190/Kaspersky-Anti-Virus-File-Server-8.0.3.297-XSS-CSRF-Code-Execution.html · Exploit
• 🔥 http://seclists.org/fulldisclosure/2017/Jun/33 · Exploit
• 🔥 https://exploit-db.com/exploits/42269 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-9811 · Security Note
• https://osv.dev/vulnerability/CVE-2017-9811 · Vendor Advisory
• https://bdu.fstec.ru/vul/2017-02124 · Security Note
• http://securityfocus.com/bid/99330 · Note
• http://securitytracker.com/id/1038798 · Note