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Ubuntu: (Multiple Advisories) (CVE-2019-11366): atftpd vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2019-11366): atftpd vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
04/20/2019
Created
09/28/2020
Added
09/25/2020
Modified
03/22/2023

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.

Solution(s)

  • ubuntu-upgrade-atftp
  • ubuntu-upgrade-atftpd

References

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