Oracle Linux 5 / 6 : ecryptfs-utils (ELSA-2011-1241)

critical Nessus Plugin ID 68338

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2011-1241 advisory.

- utils/mount.ecryptfs_private.c in ecryptfs-utils before 90 does not properly check mountpoint permissions, which allows local users to effectively replace any directory with a new filesystem, and consequently gain privileges, via a mount system call. (CVE-2011-1831)

- utils/mount.ecryptfs_private.c in ecryptfs-utils before 90 does not properly check mountpoint permissions, which allows local users to remove directories via a umount system call. (CVE-2011-1832)

- utils/mount.ecryptfs_private.c in ecryptfs-utils before 90 does not properly maintain the mtab file during error conditions, which allows local users to cause a denial of service (table corruption) or bypass intended unmounting restrictions via a umount system call. (CVE-2011-1834)

- The encrypted private-directory setup process in utils/ecryptfs-setup-private in ecryptfs-utils before 90 does not properly ensure that the passphrase file is created, which might allow local users to bypass intended access restrictions at a certain time in the new-user creation steps. (CVE-2011-1835)

- The lock-counter implementation in utils/mount.ecryptfs_private.c in ecryptfs-utils before 90 allows local users to overwrite arbitrary files via unspecified vectors. (CVE-2011-1837)

- When mount.ecrpytfs_private before version 87-0ubuntu1.2 calls setreuid() it doesn't also set the effective group id. So when it creates the new version, mtab.tmp, it's created with the group id of the user running mount.ecryptfs_private. (CVE-2011-3145)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2011-1241.html

Plugin Details

Severity: Critical

ID: 68338

File Name: oraclelinux_ELSA-2011-1241.nasl

Version: 1.14

Type: local

Agent: unix

Published: 7/12/2013

Updated: 1/16/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2011-3145

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:ecryptfs-utils, p-cpe:/a:oracle:linux:ecryptfs-utils-devel, p-cpe:/a:oracle:linux:ecryptfs-utils-gui, p-cpe:/a:oracle:linux:ecryptfs-utils-python, cpe:/o:oracle:linux:5, cpe:/o:oracle:linux:6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 9/1/2011

Vulnerability Publication Date: 10/3/2012

Reference Information

CVE: CVE-2011-1831, CVE-2011-1832, CVE-2011-1834, CVE-2011-1835, CVE-2011-1837, CVE-2011-3145

BID: 49108, 49287

RHSA: 2011:1241