Vulnerability Name:

CVE-2021-33815 (CCN-203055)

Assigned:2021-05-27
Published:2021-05-27
Updated:2021-06-07
Summary:dwa_uncompress in libavcodec/exr.c in FFmpeg 4.4 allows an out-of-bounds array access because dc_count is not strictly checked.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-129
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-33815

Source: XF
Type: UNKNOWN
ffmpeg-cve202133815-code-exec(203055)

Source: CCN
Type: ffmpeg GIT Repository
avcodec/exr: More strictly check dc_count

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/26d3c81bc5ef2f8c3f09d45eaeacfb4b1139a777

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ffmpeg:ffmpeg:4.4:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ffmpeg:ffmpeg:4.4:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:3303
    P
    		mipv6d-2.0.2.umip.0.4-19.63 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:3571
    P
    		libXxf86dga1-1.1.4-3.58 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94933
    P
    		libavcodec58_134-4.4-150400.1.13 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:95201
    P
    		libavformat58_76-4.4-150400.1.13 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:112221
    P
    		ffmpeg-4-4.4-5.2 on GA media (Moderate)
    2022-01-17
    oval:org.opensuse.security:def:105751
    P
    		ffmpeg-4-4.4-5.2 on GA media (Moderate)
    2021-10-01
    BACK
    ffmpeg ffmpeg 4.4
    ffmpeg ffmpeg 4.4