Secunia CSI7
Advisories
Research
Forums
Create Profile
Our Commitment
Database
Search
Advisories by Product
Advisories by Vendor
Terminology
Report Vulnerability
Insecure Library Loading
Less critical

libpng Multiple Denial of Service Vulnerabilities

-

Release Date:  2007-10-08    Last Update:  2007-10-09    Views:  16,251

Secunia Advisory SA27093

Where:

From remote

Impact:

DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Some vulnerabilities have been reported in libpng, which can be exploited by malicious people to cause a DoS (Denial of Service).

1) Certain errors within libpng, including a logical NOT instead of a bitwise NOT in pngtrtran.c, an error in the 16bit cheap transparency extension, and an incorrect use of sizeof() may be exploited to crash an application using the library.

2) Various out-of-bounds read errors exist within the functions "png_handle_pCAL()", "png_handle_sCAL()", "png_push_read_tEXt()", "png_handle_iTXt()", and "png_handle_ztXt()", which may be exploited by exploited to crash an application using the library.

The vulnerabilities are reported in versions prior to 1.2.21.


Solution:
Update to version 1.2.21.

Provided and/or discovered by:
1) George Cook and Jeff Phillips
2) Tavis Ormandy

Original Advisory:
http://www.libpng.org/pub/png/libpng.html
http://sourceforge.net/mailarchive/forum.php?thread_name=3.0.6.32.20071004082318.012a7628%40mail.comcast.net&forum_name=png-mng-implement

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: libpng Multiple Denial of Service Vulnerabilities

No posts yet

-

You must be logged in to post a comment.



 Products Solutions Customers Partner Resources Company
 
 Corporate
Vulnerability Intelligence Manager (VIM)
Corporate Software Inspector (CSI)
Consumer
Personal Software Inspector (PSI)
Online Software Inspector (OSI)
 Industry
Compliance
Technology
Integration
 Customers
Testimonials
 VARS
MSSP
Technology Partners
References
 Factsheets
Reports
Webinars
Events
 About us
Careers
Memberships
Newsroom


 
© 2002-2014 Secunia ApS - Rued Langgaards Vej 8, 4th floor, DK-2300 Copenhagen, Denmark - +45 7020 5144
Terms & Conditions and Copyright - Privacy - Report Vulnerability