CVE-2017-15643
An active network attacker (MiTM) can achieve remote code execution on a machine that runs IKARUS Anti Virus 2.16.7.
Does this matter?
A public exploit is published in Exploit-DB and the impact is high, while EPSS rates exploitation at 6.4%. Anyone can run this; patch or mitigate before the next change window and check exposed instances for signs of use.
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.
- CVSS 3.0
- 7.4 HIGHCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 6.39% probability · 94th percentile
- Public exploits
- 1 in Exploit-DB · first 16 October 2017
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Affected
- ikarussecurity/ikarus antivirus
- Source
- cve@mitre.org
EPSS 6.4% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- https://blogs.securiteam.com/index.php/archives/3485Exploit, Technical Description, Third Party Advisory
- 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/3485Exploit, Technical Description, Third Party Advisory
- https://www.ikarussecurity.com/about-ikarus/security-blog/vulnerability-in-windows-antivirus-products-ik-sa-2017-0001/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.