tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly consider the combination of data, OACK, and other options.

An update of the atftp package has been released.

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-6334-1 advisory.

    Peter Wang discovered that atftp did not properly manage certain inputs. A remote attacker could send a     specially crafted tftp request to the server to cause a crash. (CVE-2020-6097)

    Andreas B. Mundt discovered that atftp did not properly manage certain inputs. A remote attacker could     send a specially crafted tftp request to the server to cause a crash. (CVE-2021-41054)

    Johannes Krupp discovered that atftp did not properly manage certain inputs. A remote attacker could send     a specially crafted tftp request to the server and make the server to disclose /etc/group data.
    (CVE-2021-46671)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2820 advisory.

  - An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp     0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call     resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this     vulnerability. (CVE-2020-6097)

  - tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly     consider the combination of data, OACK, and other options. (CVE-2021-41054)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2021:3237-1 advisory.

  - tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not properly     consider the combination of data, OACK, and other options. (CVE-2021-41054)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
203234	Photon OS 4.0: Atftp PHSA-2021-4.0-0109	Nessus	PhotonOS Local Security Checks	high
180471	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS : atftp vulnerabilities (USN-6334-1)	Nessus	Ubuntu Local Security Checks	medium
155440	Debian DLA-2820-1 : atftp - LTS security update	Nessus	Debian Local Security Checks	high
153958	Photon OS 1.0: Atftp PHSA-2021-1.0-0437	Nessus	PhotonOS Local Security Checks	high
153956	Photon OS 2.0: Atftp PHSA-2021-2.0-0400	Nessus	PhotonOS Local Security Checks	high
153773	SUSE SLES12 Security Update : atftp (SUSE-SU-2021:3237-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2021-41054

high

Tenable Plugins

high

medium

high

high

high

high