VDB-143437 · CVE-2019-17539 · GCVE-0-2019-17539

FFmpeg up to 4.1 libavcodec/utils.c avcodec_open2 null pointer dereference

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.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability was found in FFmpeg up to 4.1. It has been rated as problematic. This affects the function avcodec_open2 of the file libavcodec/utils.c. This manipulation causes null pointer dereference. This vulnerability is tracked as CVE-2019-17539. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in FFmpeg up to 4.1 (Multimedia Processing Software) and classified as problematic. Affected by this vulnerability is the function avcodec_open2 of the file libavcodec/utils.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. The summary by CVE is:

In FFmpeg before 4.2, avcodec_open2 in libavcodec/utils.c allows a NULL pointer dereference and possibly unspecified other impact when there is no valid close function pointer.

The weakness was disclosed 10/14/2019. This vulnerability is known as CVE-2019-17539 since 10/14/2019. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Upgrading to version 4.2 eliminates this vulnerability.

The entry VDB-143440 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Multimedia Processing Software

Name

FFmpeg

Version

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: 7.4

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FFmpeg 4.2
Patch: github.com

Timelineinfo

10/14/2019 🔍
10/14/2019 +0 days 🔍
10/14/2019 +0 days 🔍
01/08/2024 +1547 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: 8df6884832ec413cf032dfaa45c23b1c7876670c
Status: Not defined

CVE: CVE-2019-17539 (🔍)
GCVE (CVE): GCVE-0-2019-17539
GCVE (VulDB): GCVE-100-143437
See also: 🔍

Entryinfo

Created: 10/14/2019 08:16
Updated: 01/08/2024 11:13
Changes: 10/14/2019 08:16 (38), 10/14/2019 08:21 (18), 01/08/2024 11:05 (6), 01/08/2024 11:13 (1)
Complete: 🔍
Cache ID: 216::103

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