Vulnerability Details : CVE-2021-29453
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.
Vulnerability category: Denial of service
Products affected by CVE-2021-29453
- cpe:2.3:a:matrix-media-repo_project:matrix-media-repo:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-29453
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-29453
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:N/I:N/A:P |
8.0
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST | |
|
5.7
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H |
2.1
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2021-29453
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: security-advisories@github.com (Secondary)
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-29453
-
https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updated
turt2live/matrix-media-repo TagsThird Party Advisory
-
https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9h
Denial of service through memory exhaustion · Advisory · turt2live/matrix-media-repo · GitHubPatch;Third Party Advisory
-
https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7
Release v1.2.7 · turt2live/matrix-media-repo · GitHubRelease Notes;Third Party Advisory
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