CVE-2023-40044
Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 26 October 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 90.15% probability · 100th percentile
- CISA KEV
- Listed 5 October 2023 · due 26 October 2023 · used in ransomware campaigns
- Weakness
- CWE-502
- Affected
- progress/ws ftp server
- Source
- security@progress.com
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023; https://nvd.nist.gov/vuln/detail/CVE-2023-40044
References
- http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044Third Party Advisory
- https://censys.com/cve-2023-40044/Third Party Advisory
- https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023Vendor Advisory
- https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044Exploit, Third Party Advisory
- https://www.progress.com/ws_ftpProduct
- https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/Broken Link, Third Party Advisory
- https://www.theregister.com/2023/10/02/ws_ftp_update/Press/Media Coverage, Third Party Advisory
- http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
- https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044Third Party Advisory
- https://censys.com/cve-2023-40044/Third Party Advisory
- https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023Vendor Advisory
- https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044Exploit, Third Party Advisory
- https://www.progress.com/ws_ftpProduct
- https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/Broken Link, Third Party Advisory
- https://www.theregister.com/2023/10/02/ws_ftp_update/Press/Media Coverage, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-40044US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.