CVE-2017-15271

Published: Nov 15, 2017 Last Modified: Apr 20, 2025
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,9
Source: [email protected]
Attack Vector: network
Attack Complexity: high
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
MEDIUM 4,3
Source: [email protected]
Access Vector: network
Access Complexity: medium
Authentication: none
Confidentiality: none
Integrity: none
Availability: partial

Description

AI Translation Available

A use-after-free issue could be triggered remotely in the SFTP component of PSFTPd 10.0.4 Build 729. This issue could be triggered prior to authentication. The PSFTPd server did not automatically restart, which enabled attackers to perform a very effective DoS attack against this service. By sending a crafted SSH identification / version string to the server, a NULL pointer dereference could be caused, apparently because of a race condition in the window message handling, performing the cleanup for invalid connections. This incorrect cleanup code has a use-after-free.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,1931
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

416

Use After Free

Stable
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
Exploit

PSFTPd Windows FTP Server 10.0.4 Build 729 - …

PSFTPd Windows FTP Server 10.0.4 Build 729 - Log Injection / Use-After-Free

Author: X41 D-Sec GmbH Published:
View Exploit Code →
Application

Psftpd by Psftp

Product Information
Vendor Psftp
Product Psftpd
Version 10.0.4
cpe:2.3:a:psftp:psftpd:10.0.4:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
http://packetstormsecurity.com/files/144972/PSFTPd-Windows-…
Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Bu…
https://www.exploit-db.com/exploits/43144/
Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/43144/
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/
Third Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/
http://www.securityfocus.com/archive/1/541518/100/0/threaded
http://www.securityfocus.com/archive/1/541518/100/0/threaded
http://packetstormsecurity.com/files/144972/PSFTPd-Windows-…
Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/144972/PSFTPd-Windows-FTP-Server-10.0.4-Bu…
https://www.exploit-db.com/exploits/43144/
Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/43144/
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/
Third Party Advisory
https://www.x41-dsec.de/lab/advisories/x41-2017-006-psftpd/
http://www.securityfocus.com/archive/1/541518/100/0/threaded
http://www.securityfocus.com/archive/1/541518/100/0/threaded