Note:
This project will be discontinued after December 13, 2021. [more]
2019-04-20
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.
Products | Atftp |
Type | NULL Pointer Dereference (CWE-476) |
First patch | - None (likely due to unavailable code) |
Links |
• https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities
• https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/ • https://seclists.org/bugtraq/2019/May/16 • https://lists.debian.org/debian-lts-announce/2019/05/msg00012.html • https://www.debian.org/security/2019/dsa-4438 |