Vulnerability Name:

CVE-2015-6818 (CCN-106332)

Assigned:2015-06-29
Published:2015-06-29
Updated:2018-12-21
Summary: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.
CVSS v3 Severity:5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
5.5 Medium (Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
3.7 Low (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-17
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2015-6818

Source: CONFIRM
Type: UNKNOWN
http://ffmpeg.org/security.html

Source: CCN
Type: FFmpeg GIT Repository
avcodec/pngdec: Only allow one IHDR chunk

Source: CONFIRM
Type: UNKNOWN
http://git.videolan.org/?p=ffmpeg.git;a=commit;h=47f4e2d8960ca756ca153ab8e3e93d80449b8c91

Source: SECTRACK
Type: UNKNOWN
1033483

Source: UBUNTU
Type: UNKNOWN
USN-2944-1

Source: XF
Type: UNKNOWN
ffmpeg-cve20156818-dos(106332)

Source: MLIST
Type: UNKNOWN
[debian-lts-announce] 20181220 [SECURITY] [DLA 1611-1] libav security update

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2015-6818

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:* (Version <= 2.7.1)

    • Configuration 2:
  • cpe:/o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ffmpeg:ffmpeg:2.7.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.bionic:def:201568180000000
    V
    		CVE-2015-6818 on Ubuntu 18.04 LTS (bionic) - medium.
    2015-09-06
    oval:com.ubuntu.xenial:def:201568180000000
    V
    		CVE-2015-6818 on Ubuntu 16.04 LTS (xenial) - medium.
    2015-09-06
    oval:com.ubuntu.artful:def:20156818000
    V
    		CVE-2015-6818 on Ubuntu 17.10 (artful) - medium.
    2015-09-05
    oval:com.ubuntu.xenial:def:20156818000
    V
    		CVE-2015-6818 on Ubuntu 16.04 LTS (xenial) - medium.
    2015-09-05
    oval:com.ubuntu.bionic:def:20156818000
    V
    		CVE-2015-6818 on Ubuntu 18.04 LTS (bionic) - medium.
    2015-09-05
    oval:com.ubuntu.precise:def:20156818000
    V
    		CVE-2015-6818 on Ubuntu 12.04 LTS (precise) - medium.
    2015-09-05
    oval:com.ubuntu.trusty:def:20156818000
    V
    		CVE-2015-6818 on Ubuntu 14.04 LTS (trusty) - medium.
    2015-09-05
    BACK
    ffmpeg ffmpeg *
    canonical ubuntu linux 12.04
    ffmpeg ffmpeg 2.7.1