CVE-2021-29453
5.7 · MEDIUMOverview
CVE-2021-29453 is a medium-severity vulnerability affecting matrix-media-repo_project matrix-media-repo. It was published on April 19, 2021 and has a CVSS 3.1 base score of 5.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.7, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
matrix-media-repo is an open-source multi-domain media repository for Matrix. Versions 1.2.6 and earlier of matrix-media-repo do not properly handle malicious images which are crafted to be small in file size, but large in complexity. A malicious user could upload a relatively small image in terms of file size, using particular image formats, which expands to have extremely large dimensions during the process of thumbnailing. The server can be exhausted of memory in the process of trying to load the whole image into memory for thumbnailing, leading to denial of service. Version 1.2.7 has a fix for the vulnerability.
Remediation
Check the references section for vendor advisories and patches from matrix-media-repo_project. Update matrix-media-repo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| matrix-media-repo_project | matrix-media-repo | >= 0, < 1.2.7 | Affected |
References
Frequently Asked Questions
What is CVE-2021-29453?
CVE-2021-29453 is a medium-severity vulnerability affecting matrix-media-repo_project matrix-media-repo. It was published on April 19, 2021 and has a CVSS 3.1 base score of 5.7 (MEDIUM).
How severe is CVE-2021-29453?
This vulnerability has a CVSS 3.1 base score of 5.7, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-29453?
Check the references section for vendor advisories and patches from matrix-media-repo_project. Update matrix-media-repo to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-29453?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-29453 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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