Security Advisory

CVE-2017-15271

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2017-11-15 16:00:00

Last updated 2024-08-05 19:50:16

Assigner mitre

CVSS score not scored

State PUBLISHED

Description

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.

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