CVEvulnerability
CVE-2019-11366
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2019-04-20
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-476
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.
Affected configurations
• atftp project atftp 0.7.1
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- https://lists.debian.org/debian-lts-announce/2019/05/msg00012.html lists.debian.org
- https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities Exploit, Third Party Advisory
- https://seclists.org/bugtraq/2019/May/16 seclists.org
- https://security.gentoo.org/glsa/202003-14 security.gentoo.org
- https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/ Patch, Third Party Advisory
- https://usn.ubuntu.com/4540-1/ usn.ubuntu.com
- https://www.debian.org/security/2019/dsa-4438 www.debian.org
- https://lists.debian.org/debian-lts-announce/2019/05/msg00012.html lists.debian.org
- https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities Exploit, Third Party Advisory
- https://seclists.org/bugtraq/2019/May/16 seclists.org
- https://security.gentoo.org/glsa/202003-14 security.gentoo.org
- https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/ Patch, Third Party Advisory
- https://usn.ubuntu.com/4540-1/ usn.ubuntu.com
- https://www.debian.org/security/2019/dsa-4438 www.debian.org