PT-2021-5790 · Atftp+5 · Atftp+5

Andreas B. Mundt · Published 2021-09-12 · Updated 2024-06-15 · CVE-2021-41054

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions atftp versions 0.7.4 and earlier

Description The issue is related to a buffer overflow in the tftpd file.c component of atftp. This occurs because the buffer-size handling does not properly consider the combination of data, OACK, and other options. The vulnerability can be exploited by a remote attacker to cause a denial of service.

Recommendations For atftp versions 0.7.4 and earlier, consider disabling the vulnerable tftpd file.c component until a patch is available. Restrict access to the tftpd file.c module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

ALT-PU-2024-1855

ALT-PU-2024-2319

ALT-PU-2024-7116

ALT-PU-2024-7118

BDU:2022-00244

CVE-2021-41054

DLA-2820-1

OPENSUSE-SU-2024:10636-1

SUSE-SU-2021:3237-1

SUSE-SU-2021_3237-1

USN-6334-1

Affected Products

Alt Linux

Astra Linux

Linuxmint

Suse

Ubuntu

Atftp

References · 30

• 🔥 https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-41054 · Exploit
• https://ubuntu.com/security/CVE-2020-6097 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20230315SE81 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-41054 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-41054 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2021-1126SE17 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-41054 · Security Note
• https://sourceforge.net/p/atftp/code/ci/d255bf90834fb45be52decf9bc0b4fb46c90f205 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-41054 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:3237-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10636-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-00244 · Security Note
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20220829SE16 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0114SE47 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-41054 · Vendor Advisory