FFmpeg HLS EXT-X-MAP null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in FFmpeg. It has been classified as problematic. This issue affects some unknown processing of the component HLS EXT-X-MAP. The manipulation leads to null pointer dereference. This vulnerability is referenced as CVE-2023-6603. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in FFmpeg (unknown version). It has been rated as problematic. This issue affects an unknown code block of the component HLS EXT-X-MAP. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

A flaw was found in FFmpeg's HLS playlist parsing. This vulnerability allows a denial of service via a maliciously crafted HLS playlist that triggers a null pointer dereference during initialization.

It is possible to read the advisory at bugzilla.redhat.com. The identification of this vulnerability is CVE-2023-6603. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 271190 (Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : FFmpeg vulnerabilities (USN-7830-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (271190). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

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

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: 🔍

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Nessus ID: 271190
Nessus Name: Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : FFmpeg vulnerabilities (USN-7830-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/27/2024 🔍
11/27/2024 +0 days 🔍
10/26/2025 +333 days 🔍

Sourcesinfo

Product: ffmpeg.org

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2023-6603 (🔍)
GCVE (CVE): GCVE-0-2023-6603
GCVE (VulDB): GCVE-100-286235

Entryinfo

Created: 11/27/2024 07:37
Updated: 10/26/2025 18:42
Changes: 11/27/2024 07:37 (49), 12/31/2024 18:38 (12), 02/23/2025 04:52 (3), 08/21/2025 18:47 (12), 10/26/2025 18:42 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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