Stack-based buffer overflow in nbd - CVE-2022-26496

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Main Vulnerability Database Vulnerabilities #VU61542

Stack-based buffer overflow in nbd - CVE-2022-26496

Published: March 22, 2022 / Updated: May 7, 2023


Vulnerability identifier: #VU61542
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-2022-26496
CWE-ID: CWE-121
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 a boundary error when processing NBD_OPT_INFO or NBD_OPT_GO messages. A remote unauthenticated attacker can pass specially crafted data to the application, trigger stack-based buffer overflow and execute arbitrary code on the target system.

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


Affected software

nbd
Gentoo Linux
Fedora
Ubuntu
nbd (Debian package)
nbd-server (Ubuntu package)
sys-block/nbd
nbd

How to mitigate CVE-2022-26496

Install updates from vendor's website.

nbd - update to 3.24
nbd (Debian package) - addressed in versions 1:3.19-3+deb10u1, 1:3.21-1+deb11u1
nbd-server (Ubuntu package) - addressed in versions 1:3.16.2-1ubuntu0.2, 1:3.20-1ubuntu0.1, 1:3.21-1ubuntu0.1
sys-block/nbd - update to 3.24
nbd - addressed in versions 3.24-1.el7, 3.24-1.fc34, 3.24-1.fc35, 3.24-1.fc36, 3.24-1.fc37

External References

Related Security Bulletins