what you don't know can hurt you
Home Files News &[SERVICES_TAB]About Contact Add New

Linux 2.4 / 2.6 Privilege Escalation / Denial Of Service

Linux 2.4 / 2.6 Privilege Escalation / Denial Of Service
Posted Feb 23, 2011
Site pre-cert.de

PRE-CERT Security Advisory - Both the 2.4 and 2.6 Linux kernels have multiple vulnerabilities. A buffer overflow bug in mac_partition in fs/partitions/mac.c (for MAC partition tables) allows for a denial-of-service (kernel panic) condition via a corrupted MAC partition table. A division-by-zero bug in ldm_get_vblks in fs/partitions/ldm.c (for LDM partition tables) allows a denial-of-service (kernel oops) condition via a corrupted LDM partition table. A buffer overflow bug in ldm_frag_add in fs/partitions/ldm.c (for LDM partition tables) may allow escalation of privileges or disclosure of sensitive information via a corrupted LDM partition table.

tags | advisory, overflow, kernel, vulnerability
systems | linux
advisories | CVE-2011-1010
SHA-256 | ab0fe6ff6bc31bbaf5cc7f9b68d64070079062a5c296c403ff5d0954e13058cc

Linux 2.4 / 2.6 Privilege Escalation / Denial Of Service

Change Mirror Download
# PRE-CERT Security Advisory #

* Advisory: PRE-SA-2011-01
* Released on: 23 Feb 2011
* Last updated on: 23 Feb 2011
* Affected product: Linux Kernel 2.4 and 2.6
* Impact: - privilege Escalation
- denial-of-service
- disclosure of sensitive information
* Origin: storage devices
* CVE Identifier: - CVE-2011-1010

## Summary ##

Timo Warns (PRESENSE Technologies GmbH) reported some vulnerabilities in
the Linux kernel that may lead to privilege escalation,
denial-of-service, or information leakage via corrupted partition
tables. Exploiting these vulnerabilities has been demonstrated by a "USB
Stick of Death" that crashes the Linux kernel upon connecting the stick.

The kernel automatically evaluates partition tables of storage devices.
Note that this happens independently of whether auto-mounting is enabled
or not. The code for evaluating MAC and LDM partition tables contains the
following vulnerabilities:

* CVE-2011-1010
A buffer overflow bug in mac_partition in fs/partitions/mac.c (for MAC
partition tables) allows to cause a denial-of-service (kernel panic)
via a corrupted MAC partition table.

For a patch, see
http://git.kernel.org/linus/fa7ea87a057958a8b7926c1a60a3ca6d696328ed

* A division-by-zero bug in ldm_get_vblks in fs/partitions/ldm.c (for
LDM partition tables) allows to cause a denial-of-service (kernel
oops) via a corrupted LDM partition table.

For a patch, see
http://www.spinics.net/lists/mm-commits/msg82429.html

* A buffer overflow bug in ldm_frag_add in fs/partitions/ldm.c (for LDM
partition tables) may allow to escalate privileges or to disclose
sensitive information via a corrupted LDM partition table.

## Workaround ##

Compile and use a kernel that does not evaluate MAC and LDM partition
tables. The corresponding configuration keys are CONFIG_MAC_PARTITION
and CONFIG_LDM_PARTITION.

## References ##

https://bugzilla.redhat.com/show_bug.cgi?id=679282

When further information becomes available, this advisory will be
updated. The most recent version of this advisory is available at:

http://www.pre-cert.de/advisories/PRE-SA-2011-01.txt

## Contact ##

PRE-CERT can be reached under precert@pre-secure.de. For PGP
key information, refer to http://www.pre-cert.de
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close