NULL pointer dereference in Atftp Project
CVE-2019-11366
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.021 (80.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Atftp Project — versions 0.7.1
Weakness classification (CWE)
References
- pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities (Exploit, Third Party Advisory)
- sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/ (Patch, Third Party Advisory)
- www.debian.org/security/2019/dsa-4438 (vendor-advisory)
- seclists.org/bugtraq/2019/May/16 (mailing-list)
- lists.debian.org/debian-lts-announce/2019/05/msg00012.html (mailing-list)
- security.gentoo.org/glsa/202003-14 (vendor-advisory)
- usn.ubuntu.com/4540-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2019-11366?
- CVE-2019-11366 is a medium-severity vulnerability in Atftp Project, classified under NULL Pointer Dereference. CVSS score: 5.9/10. Published 2019-04-20.
- How severe is CVE-2019-11366?
- Medium severity. CVSS v3 base score is 5.9 out of 10.