National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-2015-6818 Detail

Current Description

The decode_ihdr_chunk function in libavcodec/pngdec.c in FFmpeg before 2.7.2 does not enforce uniqueness of the IHDR (aka image header) chunk in a PNG image, which allows remote attackers to cause a denial of service (out-of-bounds array access) or possibly have unspecified other impact via a crafted image with two or more of these chunks.

Source:  MITRE      Last Modified:  09/09/2015      View Analysis Description

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.5 HIGH
(AV:N/AC:L/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore:
Exploitability Subscore:
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name External Source CONFIRM;a=commit;h=47f4e2d8960ca756ca153ab8e3e93d80449b8c91 External Source CONFIRM;a=commit;h=47f4e2d8960ca756ca153ab8e3e93d80449b8c91 External Source SECTRACK 1033483 External Source UBUNTU USN-2944-1

Technical Details

Vulnerability Type (View All)

Change History 7 change records found - show changes