CVEvulnerability

CVE-2017-15643

7.4 HIGH Published 2017-10-19 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2017-10-19
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
7.4 HIGH — CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.6 HIGH — AV:N/AC:H/Au:N/C:C/I:C/A:C
Weaknesses
CWE-444

Description

An active network attacker (MiTM) can achieve remote code execution on a machine that runs IKARUS Anti Virus 2.16.7. IKARUS AV for Windows uses cleartext HTTP for updates along with a CRC32 checksum and an update value for verification of the downloaded files. The attacker first forces the client to initiate an update transaction by modifying an update field within an HTTP 200 response, so that it refers to a nonexistent update. The attacker then modifies the HTTP 404 response so that it specifies a successfully found update, with a Trojan horse executable file (e.g., guardxup.exe) and the correct CRC32 checksum for that file.

Affected configurations

• ikarussecurity ikarus antivirus 2.16.7

Related

Weakness · CWE (1)

  • CWE-444 Inconsistent Interpretation of HTTP Requests weakness

References