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CVE-2021-41054

tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not...

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.34%Up 1.9 points since Sep 14, 2021
90%50%10%1%

What each source reports

NVD Score used 7.5

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.

Record
CVE-2021-41054
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-120
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2021-41054
Updated
2026-11-02
EUVDEUVD-2021-28205 No score

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.

Record
EUVD-2021-28205
Updated
2026-11-03
GitHub AdvisoriesGHSA-pjhr-q582-mpq7 No score

tftpd_file.c in atftp through 0.7.4 has a buffer overflow because buffer-size handling does not...

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.

Record
GHSA-pjhr-q582-mpq7
Weakness
CWE-120
Updated
2026-11-02
OSV 7.5

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.

Record
CVE-2021-41054
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-41054 7.5

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.

Record
DEBIAN-CVE-2021-41054
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
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OSVUBUNTU-CVE-2021-41054 7.5

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.

Record
UBUNTU-CVE-2021-41054
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2024:10636-1 No score

atftp-0.7.5-1.1 on GA media

These are all security issues fixed in the atftp-0.7.5-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10636-1
Updated
2026-11-02
OSVSUSE-SU-2021:3237-1 No score

Security update for atftp

This update for atftp fixes the following issues:

  • CVE-2021-41054: Fixed buffer overflow caused by combination of data, OACK, and other options (bsc#1190522).
Record
SUSE-SU-2021:3237-1
Updated
2026-11-02
OSVUSN-6334-1 No score

atftp vulnerabilities

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)

Record
USN-6334-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
atftp
Debian:12
 before 0.7.git20210915-1
0.7.git20210915-1
atftp
Debian:13
 before 0.7.git20210915-1
0.7.git20210915-1
atftp
Debian:14
 before 0.7.git20210915-1
0.7.git20210915-1
atftp
Debian:9
From an advisory covering 2 CVEs
 before 0.7.git20120829-3.1~deb9u2, plus listed versions
0.7.git20120829-30.7.git20120829-3.1~deb9u1
0.7.git20120829-3.1~deb9u2
atftp
SUSE:Linux Enterprise Server 12 SP5
 before 0.7.0-160.11.1
0.7.0-160.11.1
atftp
SUSE:Linux Enterprise Server for SAP Applications 12 SP5
 before 0.7.0-160.11.1
0.7.0-160.11.1
atftp
Ubuntu:Pro:16.04:LTS
 before 0.7.git20120829-3.1~0.16.04.1+esm1, plus listed versions
0.7.git20120829-2.10.7.git20120829-3.1~0.16.04.1
0.7.git20120829-3.1~0.16.04.1+esm1
atftp
Ubuntu:Pro:18.04:LTS
 before 0.7.git20120829-3.1~0.18.04.1+esm1, plus listed versions
0.7.git20120829-30.7.git20120829-3.1~0.18.04.1
0.7.git20120829-3.1~0.18.04.1+esm1
atftp
Ubuntu:20.04:LTS
 before 0.7.git20120829-3.1ubuntu0.1, plus listed versions
0.7.git20120829-3.1
0.7.git20120829-3.1ubuntu0.1
atftp
Ubuntu:Pro:16.04:LTS
From an advisory covering 3 CVEs
 before 0.7.git20120829-3.1~0.16.04.1+esm1, plus listed versions
0.7.git20120829-2.10.7.git20120829-3.1~0.16.04.1
0.7.git20120829-3.1~0.16.04.1+esm1
atftp
Ubuntu:Pro:18.04:LTS
From an advisory covering 3 CVEs
 before 0.7.git20120829-3.1~0.18.04.1+esm1, plus listed versions
0.7.git20120829-30.7.git20120829-3.1~0.18.04.1
0.7.git20120829-3.1~0.18.04.1+esm1
atftp
Ubuntu:20.04:LTS
From an advisory covering 3 CVEs
 before 0.7.git20120829-3.1ubuntu0.1, plus listed versions
0.7.git20120829-3.1
0.7.git20120829-3.1ubuntu0.1
atftp
openSUSE:Tumbleweed
From an advisory covering 3 CVEs
 before 0.7.5-1.1
0.7.5-1.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-41054 is a high vulnerability (CVSS 7.5) in Atftp Project Atftp, published September 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.34%, the 83rd percentile. Fixed in atftp 0.7.git20210915-1.

References

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