CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in FFmpeg up to 2.8.11/3.0.7/3.1.7/3.2.4/3.3.0. It has been declared as critical. This impacts the function vp8_decode_mb_row_no_filter/pred8x8_128_dc_8_c of the file libavcodec/webp.c. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2017-9994. The attack is restricted to local execution. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in FFmpeg up to 2.8.11/3.0.7/3.1.7/3.2.4/3.3.0 (Multimedia Processing Software) and classified as critical. This vulnerability affects the function vp8_decode_mb_row_no_filter/pred8x8_128_dc_8_c of the file libavcodec/webp.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

libavcodec/webp.c in FFmpeg before 2.8.12, 3.0.x before 3.0.8, 3.1.x before 3.1.8, 3.2.x before 3.2.5, and 3.3.x before 3.3.1 does not ensure that pix_fmt is set, which allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file, related to the vp8_decode_mb_row_no_filter and pred8x8_128_dc_8_c functions.

The bug was discovered 05/08/2017. The weakness was disclosed 06/28/2017 (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2017-9994 since 06/28/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 51 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 120988 (Debian DLA-1630-1 : libav 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 176709 (Debian Security Update for libav (DLA 1630-1)).

Upgrading to version 2.8.12, 3.0.8, 3.1.8, 3.2.5 or 3.3.1 eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (120988) and SecurityFocus (BID 99317†). The entries VDB-102891, VDB-106023, VDB-106024 and VDB-106025 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Multimedia Processing Software

Name

• FFmpeg

Version

• 2.8.0
• 2.8.1
• 2.8.2
• 2.8.3
• 2.8.4
• 2.8.5
• 2.8.6
• 2.8.7
• 2.8.8
• 2.8.9
• 2.8.10
• 2.8.11
• 3.0
• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.1
• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.2
• 3.2.0
• 3.2.1
• 3.2.2
• 3.2.3
• 3.2.4
• 3.3.0

License

• open-source

Website

• Product: https://ffmpeg.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 120988
Nessus Name: Debian DLA-1630-1 : libav security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: FFmpeg 2.8.12/3.0.8/3.1.8/3.2.5/3.3.1
Patch: github.com

Timelineinfo

05/08/2017 🔍
06/28/2017 +51 days 🔍
06/28/2017 +0 days 🔍
06/28/2017 +0 days 🔍
06/28/2017 +0 days 🔍
06/28/2017 +0 days 🔍
01/07/2019 +558 days 🔍
01/08/2019 +1 days 🔍
12/09/2022 +1431 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: 6b5d3fb26fb4be48e4966e4b1d97c2165538d4ef⛔
Researcher: Monor
Status: Confirmed

CVE: CVE-2017-9994 (🔍)
GCVE (CVE): GCVE-0-2017-9994
GCVE (VulDB): GCVE-100-102892
SecurityFocus: 99317 - FFmpeg CVE-2017-9994 Heap Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 06/28/2017 16:41
Updated: 12/09/2022 13:06
Changes: 06/28/2017 16:41 (69), 10/21/2019 09:10 (11), 12/30/2020 07:14 (2), 12/09/2022 12:59 (4), 12/09/2022 13:06 (1)
Complete: 🔍
Cache ID: 216:A64:103

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