VULNERABILITY INTELLIGENCE

CVE-2019-11366

CVSS score5.9 MEDIUM
EPSS probability2.10%
CISA KEVNot currently listed
Published2019-04-20
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current->next.

Weakness classification

  • CWE-476: NULL Pointer Dereference

Primary references