FFmpeg 3.4 VC-2 Video Compression Encoder libavcodec/vc2enc.c out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$0-$5k0.00

A vulnerability was found in FFmpeg 3.4 (Multimedia Processing Software). It has been classified as problematic. This affects an unknown code block of the file libavcodec/vc2enc.c of the component VC-2 Video Compression Encoder. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. The summary by CVE is:

The VC-2 Video Compression encoder in FFmpeg 3.4 allows remote attackers to cause a denial of service (out-of-bounds read) because of incorrect buffer padding for non-Haar wavelets, related to libavcodec/vc2enc.c and libavcodec/vc2enc_dwt.c.

The bug was discovered 11/09/2017. The weakness was shared 11/21/2017 by Liu Bingchang (Website). It is possible to read the advisory at git.videolan.org. This vulnerability is uniquely identified as CVE-2017-16840 since 11/15/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104792 (Debian DSA-4049-1 : ffmpeg - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176229 (Debian Security Update for ffmpeg (DSA 4049-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104792) and SecurityFocus (BID 101924†). The entries VDB-108603 and VDB-109163 are related to this item.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104792
Nessus Name: Debian DSA-4049-1 : ffmpeg - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 54731
OpenVAS Name: Debian Security Advisory DSA 4049-1 (ffmpeg - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: a94cb36ab2ad99d3a1331c9f91831ef593d94f74

Timelineinfo

11/09/2017 🔍
11/15/2017 +6 days 🔍
11/21/2017 +6 days 🔍
11/21/2017 +0 days 🔍
11/21/2017 +0 days 🔍
11/22/2017 +1 days 🔍
11/27/2017 +5 days 🔍
11/28/2017 +1 days 🔍
01/11/2023 +1870 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: 94e538aebbc9f9c529e8b1f2eda860cfb8c473b1
Researcher: Liu Bingchang
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-16840 (🔍)
OVAL: 🔍

SecurityFocus: 101924 - FFmpeg CVE-2017-16840 Multiple Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 11/22/2017 07:55 AM
Updated: 01/11/2023 08:49 AM
Changes: 11/22/2017 07:55 AM (76), 12/09/2019 11:00 AM (6), 01/24/2021 10:28 PM (3), 01/11/2023 08:49 AM (5)
Complete: 🔍
Cache ID: 18:578:40

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