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CVE-2008-2931

Published: 9 July 2008

The do_change_type function in fs/namespace.c in the Linux kernel before 2.6.22 does not verify that the caller has the CAP_SYS_ADMIN capability, which allows local users to gain privileges or cause a denial of service by modifying the properties of a mountpoint.

From the Ubuntu Security Team

The do_change_type routine did not correctly validation administrative users. A local attacker could exploit this to block mount points or cause private mounts to be shared, leading to denial of service or a possible loss of privacy.

Priority

Low

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
linux-source-2.6.15
Launchpad, Ubuntu, Debian
upstream Needs triage

dapper
Released (2.6.15-52.71)
feisty Does not exist

gutsy Does not exist

hardy Does not exist

linux-source-2.6.20
Launchpad, Ubuntu, Debian
upstream Needs triage

dapper Does not exist

feisty
Released (2.6.20-17.39)
gutsy Does not exist

hardy Does not exist

linux-source-2.6.22
Launchpad, Ubuntu, Debian
upstream Not vulnerable

dapper Does not exist

feisty Does not exist

gutsy Not vulnerable

hardy Does not exist

linux
Launchpad, Ubuntu, Debian
upstream Not vulnerable

dapper Does not exist

feisty Does not exist

gutsy Does not exist

hardy Not vulnerable

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H