CVE-2017-15643

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.

CVSS v3.0 7.4 HIGH
CVSS v2.0 7.6 HIGH

7.4^/10

CVSS v3.0 : HIGH

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

Exploitability : 1.4 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.6^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:H/Au:N/C:C/I:C/A:C

Exploitability : 4.9 / Impact : 10.0

Access Vector NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.ikarussecurity.com/about-ikarus/security-blog/vulnerability-in-windows-antivirus-products-ik-sa-2017-0001/	Vendor Advisory
https://blogs.securiteam.com/index.php/archives/3485	Exploit Technical Description Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:ikarussecurity:ikarus_antivirus:2.16.7:*:*:*:*:*:*:*

Information

Published : 2017-10-19 15:29

Updated : 2017-11-14 10:56

NVD link : CVE-2017-15643

Mitre link : CVE-2017-15643

JSON object : View

CWE

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

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Products Affected

ikarussecurity

ikarus_antivirus

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