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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in FFmpeg 3.3.3. This affects the function mxf_read_primer_pack of the file libavformat/mxfdec.c. Performing a manipulation of the argument item_num as part of Variable results in input validation. This vulnerability is known as CVE-2017-14169. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in FFmpeg 3.3.3 (Multimedia Processing Software). This affects the function mxf_read_primer_pack of the file libavformat/mxfdec.c. The manipulation of the argument item_num as part of a Variable leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the mxf_read_primer_pack function in libavformat/mxfdec.c in FFmpeg 3.3.3, an integer signedness error might occur when a crafted file, which claims a large "item_num" field such as 0xffffffff, is provided. As a result, the variable "item_num" turns negative, bypassing the check for a large value.

The bug was discovered 08/30/2017. The weakness was published 09/07/2017 by Security Team (GitHub Repository). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2017-14169 since 09/07/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 103289 (openSUSE Security Update : ffmpeg / ffmpeg2 (openSUSE-2017-1067)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176657 (Debian Security Update for libav (DLA 1654-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103289) and SecurityFocus (BID 100692†). Similar entries are available at VDB-68317, VDB-99850, VDB-99852 and VDB-102005. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Multimedia Processing Software

Name

• FFmpeg

Version

• 3.3.3

License

• open-source

Website

• Product: https://ffmpeg.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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: 103289
Nessus Name: openSUSE Security Update : ffmpeg / ffmpeg2 (openSUSE-2017-1067)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for ffmpeg, openSUSE-SU-2017:2502-1 (ffmpeg,)
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: github.com

Timelineinfo

08/30/2017 🔍
09/07/2017 +8 days 🔍
09/07/2017 +0 days 🔍
09/07/2017 +0 days 🔍
09/07/2017 +0 days 🔍
09/08/2017 +1 days 🔍
09/15/2017 +7 days 🔍
09/18/2017 +3 days 🔍
12/28/2022 +1927 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: 9d00fb9d70ee8c0cc7002b89318c5be00f1bbdad
Researcher: Security Team
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-14169 (🔍)
GCVE (CVE): GCVE-0-2017-14169
GCVE (VulDB): GCVE-100-106185

OVAL: 🔍

SecurityFocus: 100692 - FFmpeg 'libavformat/mxfdec.c' Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 09/08/2017 09:11
Updated: 12/28/2022 07:47
Changes: 09/08/2017 09:11 (72), 11/13/2019 13:25 (13), 12/28/2022 07:42 (5), 12/28/2022 07:47 (1)
Complete: 🔍
Cache ID: 216:1A5:103

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