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CERT Coordination Center


libpng denial-of-service vulnerability

Vulnerability Note VU#684412

Original Release Date: 2014-02-25 | Last Revised: 2014-02-25

Overview

libpng versions 1.6.0 through 1.6.9 contain a denial-of-service vulnerability.

Description

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') - CVE-2014-0333

Glenn Randers Pehrson of the PNG Development Group reports:

The progressive decoder in libpng16 enters an infinite loop, thus hanging the application, when it encounters a zero-length IDAT chunk. Only libpng-1.6.0 and later are affected, and only applications using the progressive reader...The loop consumes CPU time but no memory or other resources.

Impact

Decoding a malformed .png file may cause the target application to become unresponsive.

Solution

Apply an Update
The PNG Development Group has released a patch to address this issue for libpng versions 1.6.0 through 1.6.9. The patch can be found at both simplesystems.org and the libpng Sourceforge project.

Vendor Information

684412
Expand all

libpng

Updated:  February 25, 2014

Status

  Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Addendum

There are no additional comments at this time.

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P
Temporal 3.6 E:F/RL:OF/RC:C
Environmental 3.6 CDP:N/TD:H/CR:ND/IR:ND/AR:ND

References

Credit

Thanks to Glenn Randers-Pehrson for reporting this vulnerability.

This document was written by Todd Lewellen.

Other Information

CVE IDs: CVE-2014-0333
Date Public: 2014-02-25
Date First Published: 2014-02-25
Date Last Updated: 2014-02-25 17:45 UTC
Document Revision: 4

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