Integer overflow in nbd - CVE-2022-26495

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Main Vulnerability Database Vulnerabilities #VU61541

Integer overflow in nbd - CVE-2022-26495

Published: March 22, 2022


Vulnerability identifier: #VU61541
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-2022-26495
CWE-ID: CWE-190
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 integer overflow when processing NBD_OPT_INFO, NBD_OPT_GO, and NBD_OPT_EXPORT_NAME messages. A remote attacker can pass specially crafted data to the application, trigger an integer 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-2022-26495

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