VDB-173228 · CVE-2021-3498 · GCVE-0-2021-3498

GStreamer up to 1.18.3 Matroska heap-based overflow

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 GStreamer up to 1.18.3. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Matroska Handler. Such manipulation leads to heap-based overflow. This vulnerability is listed as CVE-2021-3498. In addition, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GStreamer up to 1.18.3 (Multimedia Processing Software) and classified as critical. Affected by this issue is some unknown processing of the component Matroska Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

The weakness was presented 04/20/2021. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2021-3498. Technical details are unknown but a public exploit is available.

The exploit is available at packetstormsecurity.com. It is declared as proof-of-concept.

Upgrading to version 1.18.4 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Multimedia Processing Software

Name

GStreamer

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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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: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GStreamer 1.18.4

Timelineinfo

04/13/2021 🔍
04/20/2021 +7 days 🔍
04/20/2021 +0 days 🔍
03/17/2026 +1792 days 🔍

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-3498 (🔍)
GCVE (CVE): GCVE-0-2021-3498
GCVE (VulDB): GCVE-100-173228
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/20/2021 07:21
Updated: 03/17/2026 18:55
Changes: 04/20/2021 07:21 (39), 04/23/2021 14:35 (5), 07/03/2024 19:29 (23), 03/17/2026 18:55 (19)
Complete: 🔍
Cache ID: 216::103