CVE-2022-1795 – CVE-2022-1795 is a use-after-free vulnerability... (How to Fix)

Q: What is the severity of CVE-2022-1795?

CVE-2022-1795 has a CVSS score of 9.8 (CRITICAL). CVE-2022-1795 is a use-after-free vulnerability in GPAC multimedia framework that allows attackers to execute arbitrary code or cause denial of service. This affects systems running vulnerable versions of GPAC prior to v2.1.0-DEV. Users processing untrusted multimedia files are at risk.

📋 TL;DR

CVE-2022-1795 is a use-after-free vulnerability in GPAC multimedia framework that allows attackers to execute arbitrary code or cause denial of service. This affects systems running vulnerable versions of GPAC prior to v2.1.0-DEV. Users processing untrusted multimedia files are at risk.

💻 Affected Systems

Products:

GPAC (GPAC Project on Advanced Content)

Versions: All versions prior to v2.1.0-DEV

Operating Systems: Linux, Windows, macOS, BSD

Default Config Vulnerable: ⚠️ Yes

Notes: Any application using GPAC libraries or tools to process multimedia files is affected.

📦 What is this software?

Gpac by Gpac

View all CVEs affecting Gpac →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Remote code execution with the privileges of the GPAC process, potentially leading to full system compromise.

🟠

Likely Case

Application crash (denial of service) when processing malicious multimedia files.

🟢

If Mitigated

Limited impact if proper sandboxing and privilege separation are implemented.

🌐 Internet-Facing: HIGH if GPAC is exposed to untrusted file uploads or processing.

🏢 Internal Only: MEDIUM for internal systems processing user-uploaded content.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: MEDIUM

Exploitation requires processing a specially crafted multimedia file. Proof-of-concept code is available in public repositories.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: v2.1.0-DEV and later

Vendor Advisory: https://github.com/gpac/gpac/commit/c535bad50d5812d27ee5b22b54371bddec411514

Restart Required: Yes

Instructions:

1. Update GPAC to version 2.1.0-DEV or later. 2. Rebuild any applications using GPAC libraries. 3. Restart affected services.

🔧 Temporary Workarounds

Disable vulnerable parsers

all

Disable or restrict access to multimedia file processing features in GPAC.

# Configure GPAC to disable specific codecs or parsers if possible

Sandbox execution

linux

Run GPAC in a sandboxed environment with limited privileges.

# Use containerization (Docker) with minimal privileges
# Example: docker run --read-only --cap-drop=ALL gpac_container

🧯 If You Can't Patch

Implement strict input validation and sanitization for multimedia files.
Deploy network segmentation and restrict GPAC access to trusted sources only.

🔍 How to Verify

Check if Vulnerable:

Check GPAC version with 'gpac -version' or examine installed package version.

Check Version:

gpac -version 2>&1 | head -1

Verify Fix Applied:

Confirm version is 2.1.0-DEV or later and test with known safe multimedia files.

📡 Detection & Monitoring

Log Indicators:

GPAC process crashes
Memory access violation errors in system logs

Network Indicators:

Unusual outbound connections from GPAC process

SIEM Query:

process:gpac AND (event_id:1000 OR event_id:1001) OR process_crash:gpac

📊 Metadata

CVE ID: CVE-2022-1795

CVSS v3 Score: 9.8 (CRITICAL)

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE: CWE-416

Published: May 18, 2022

Last Updated: November 21, 2024

🔗 References

https://github.com/gpac/gpac/commit/c535bad50d5812d27ee5b22b54371bddec411514 Patch,Third Party Advisory
https://huntr.dev/bounties/9c312763-41a6-4fc7-827b-269eb86efcbc Exploit,Third Party Advisory
https://www.debian.org/security/2023/dsa-5411
https://github.com/gpac/gpac/commit/c535bad50d5812d27ee5b22b54371bddec411514 Patch,Third Party Advisory
https://huntr.dev/bounties/9c312763-41a6-4fc7-827b-269eb86efcbc Exploit,Third Party Advisory
https://www.debian.org/security/2023/dsa-5411

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🔗 Related Vulnerabilities

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