Twenty Year Anniversary

Secunia Security Advisory 36353

Secunia Security Advisory 36353
Posted Aug 28, 2009
Authored by Secunia | Site secunia.com

Secunia Security Advisory - Kingcope has discovered a security issue in FreeBSD's ftpd, which can be exploited by malicious users to bypass certain security restrictions.

tags | advisory
systems | freebsd
MD5 | aee12a067dce87a631a0c959dd8fd4ae

Secunia Security Advisory 36353

Change Mirror Download
----------------------------------------------------------------------

Do you have VARM strategy implemented?

(Vulnerability Assessment Remediation Management)

If not, then implement it through the most reliable vulnerability
intelligence source on the market.

Implement it through Secunia.

For more information visit:
http://secunia.com/advisories/business_solutions/

Alternatively request a call from a Secunia representative today to
discuss how we can help you with our capabilities contact us at:
sales@secunia.com

----------------------------------------------------------------------

TITLE:
FreeBSD ftpd chroot Security Bypass Security Issue

SECUNIA ADVISORY ID:
SA36353

VERIFY ADVISORY:
http://secunia.com/advisories/36353/

DESCRIPTION:
Kingcope has discovered a security issue in FreeBSD's ftpd, which can
be exploited by malicious users to bypass certain security
restrictions.

The security issue is caused due to the ftpd not correctly checking
for certain error conditions when trying to read a user's chroot
information from /etc/ftpchroot. A user can exploit this to bypass
the chroot protection by e.g. uploading ".login_conf" and
".login_conf.db" files with the "openfiles" resource limit set to 5
into a home directory.

The security issue is confirmed in FreeBSD 7.2. Other versions may
also be affected.

SOLUTION:
Allow access to trusted users only. Do not rely on the chroot
protection.

PROVIDED AND/OR DISCOVERED BY:
Kingcope

ORIGINAL ADVISORY:
http://packetstormsecurity.org/0908-exploits/bsd-setusercontext.txt

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

December 2018

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

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2018 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close