Off-by-one in Netatalk - CVE-2024-38440

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU93516

Off-by-one in Netatalk - CVE-2024-38440

Published: July 1, 2024 / Updated: July 18, 2026


Vulnerability identifier: #VU93516
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-38440
CWE-ID: CWE-193
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to an off-by-one error within the FPLoginExt in BN_bin2bn in etc/uams/uams_dhx_pam.c. A remote attacker can trigger an off-by-one error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

Netatalk
QNAP QTS
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Software Development Kit 12
SUSE Linux Enterprise Workstation Extension 12
Ubuntu
Slackware Linux
Fedora
netatalk (Ubuntu package)
libatalk0-debuginfo
libatalk0
netatalk-debugsource
netatalk
netatalk-devel
netatalk-debuginfo
QuTS hero

How to mitigate CVE-2024-38440

Install update from vendor's website.

Netatalk - addressed in versions 2.4.1, 3.1.19, 3.2.1
netatalk (Ubuntu package) - addressed in versions Ubuntu Pro, 3.1.12~ds-4ubuntu0.20.04.4, 3.1.12~ds-9ubuntu0.22.04.4
QuTS hero - update to h5.2.5.3138 build 20250519
libatalk0-debuginfo - update to 3.1.18-3.25.1
libatalk0 - update to 3.1.18-3.25.1
netatalk-debugsource - update to 3.1.18-3.25.1
netatalk - update to 3.1.18-3.25.1
netatalk-devel - update to 3.1.18-3.25.1
netatalk-debuginfo - update to 3.1.18-3.25.1
netatalk - update to 3.2.1
netatalk - update to 3.2.1-1.fc40
QNAP QTS - update to 5.2.5.3145 20250526

External References

Related Security Bulletins