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Fencer Vulns
medium 5.9

CVE-2019-11366 json

An issue was discovered in atftpd in atftp 0.7.1.

published 2019-04-20 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3044

cvss
5.9
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.1%
EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

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.

Patch / fix

  • atftp Debian 14, Debian 13, Debian 12 0.7.git20120829-3.1

debian advisories DEBIAN-CVE-2019-11366

  • atftp Ubuntu 16.04 LTS 0.7.git20120829-3.1~0.16.04.1
  • atftp Ubuntu 18.04 LTS 0.7.git20120829-3.1~0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-11366

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • atftp SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 0.7.0-135.23.3.1
  • atftp SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +11 more 0.7.0-160.8.1

suse advisories SUSE-SU-2019:14033-1SUSE-SU-2019:1091-1

Exploit prediction

2.10% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • pulsesecurity.co.nz https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.