CVE-2021-29453
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.
Does this matter?
Lower severity and a low EPSS score (1.00%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.00% probability · 61th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-770
- Affected
- matrix-media-repo project/matrix-media-repo
- Source
- security-advisories@github.com
References
- https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7Release Notes, Third Party Advisory
- https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9hPatch, Third Party Advisory
- https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updatedThird Party Advisory
- https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7Release Notes, Third Party Advisory
- https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9hPatch, Third Party Advisory
- https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updatedThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.