Twenty Year Anniversary

Secunia Security Advisory 17544

Secunia Security Advisory 17544
Posted Nov 15, 2005
Authored by Secunia | Site secunia.com

Secunia Security Advisory - A vulnerability has been reported in pnmtopng, which can be exploited by malicious people to cause a DoS (Denial of Service) and potentially to compromise a vulnerable system. The vulnerability is caused due to a boundary error when writing RGBA-palette PNG files. This can be exploited to crash pnmtopng and may allow arbitrary code execution via a specially crafted input file with exactly 256 colours. Successful exploitation requires that pnmtopng is used with the -alpha command line, and e.g. pnmtopng is used in a CGI application that allows remote users to submit image files for processing, or by tricking a user to use pnmtopng with a malicious .pnm file. The vulnerability has been reported in versions prior to 2.39. Note: Several potential malloc allocation overflow bugs have also been fixed.

tags | advisory, remote, denial of service, overflow, arbitrary, cgi, code execution
MD5 | 078d1fc5e38fb3631cf4efe3aa76f282

Secunia Security Advisory 17544

Change Mirror Download


TITLE:
Pnmtopng "alphas_of_color" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA17544

VERIFY ADVISORY:
http://secunia.com/advisories/17544/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Pnmtopng 2.x
http://secunia.com/product/6111/

DESCRIPTION:
A vulnerability has been reported in pnmtopng, which can be exploited
by malicious people to cause a DoS (Denial of Service) and potentially
to compromise a vulnerable system.

The vulnerability is caused due to a boundary error when writing
RGBA-palette PNG files. This can be exploited to crash pnmtopng and
may allow arbitrary code execution via a specially crafted input file
with exactly 256 colours.

Successful exploitation requires that pnmtopng is used with the
"-alpha" command line, and e.g. pnmtopng is used in a CGI application
that allows remote users to submit image files for processing, or by
tricking a user to use pnmtopng with a malicious ".pnm" file.

The vulnerability has been reported in versions prior to 2.39.

Note: Several potential malloc allocation overflow bugs have also
been fixed.

SOLUTION:
Update to version 2.39.
http://sourceforge.net/project/showfiles.php?group_id=32355&package_id=88579&release_id=370545

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://sourceforge.net/project/shownotes.php?release_id=370545

OTHER REFERENCES:
SA17221:
http://secunia.com/advisories/17221/

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

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/secunia_security_advisories/

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

November 2018

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