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CVE-2022-26496

Published: 6 March 2022

In nbd-server in nbd before 3.24, there is a stack-based buffer overflow. An attacker can cause a buffer overflow in the parsing of the name field by sending a crafted NBD_OPT_INFO or NBD_OPT_GO message with an large value as the length of the name.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
nbd
Launchpad, Ubuntu, Debian
impish
Released (1:3.21-1ubuntu0.1)
bionic
Released (1:3.16.2-1ubuntu0.2)
focal
Released (1:3.20-1ubuntu0.1)
kinetic
Released (1:3.23-3ubuntu1)
lunar
Released (1:3.23-3ubuntu1)
trusty Needed

upstream Needs triage

jammy
Released (1:3.23-3ubuntu1)
xenial Needed

mantic
Released (1:3.23-3ubuntu1)
Patches:
upstream: https://sourceforge.net/p/nbd/code/ci/3740ff7fc9c3847d309c180a1a9fc9bc895342d5/

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H