6.5
MEDIUM
CVE-2021-29453
Matrix Media Repo Image DoS Vulnerability
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.

INFO

Published Date :

April 19, 2021, 7:15 p.m.

Last Modified :

Aug. 3, 2022, 10:18 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-29453 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Turt2live matrix-media-repo
1 Matrix-media-repo_project matrix-media-repo
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-29453.

URL Resource
https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7 Release Notes Third Party Advisory
https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9h Patch Third Party Advisory
https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updated Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-29453 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-29453 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Aug. 03, 2022

    Action Type Old Value New Value
    Added CWE NIST CWE-770
  • Initial Analysis by [email protected]

    Apr. 28, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7 No Types Assigned https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7 Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9h No Types Assigned https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9h Patch, Third Party Advisory
    Changed Reference Type https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updated No Types Assigned https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updated Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:matrix-media-repo_project:matrix-media-repo:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.7
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-29453 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-29453 weaknesses.

CAPEC-147: XML Ping of the Death XML Ping of the Death CAPEC-227: Sustained Client Engagement Sustained Client Engagement CAPEC-492: Regular Expression Exponential Blowup Regular Expression Exponential Blowup CAPEC-125: Flooding Flooding CAPEC-130: Excessive Allocation Excessive Allocation CAPEC-147: XML Ping of the Death XML Ping of the Death CAPEC-197: Exponential Data Expansion Exponential Data Expansion CAPEC-229: Serialized Data Parameter Blowup Serialized Data Parameter Blowup CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-469: HTTP DoS HTTP DoS CAPEC-482: TCP Flood TCP Flood CAPEC-486: UDP Flood UDP Flood CAPEC-487: ICMP Flood ICMP Flood CAPEC-488: HTTP Flood HTTP Flood CAPEC-489: SSL Flood SSL Flood CAPEC-490: Amplification Amplification CAPEC-491: Quadratic Data Expansion Quadratic Data Expansion CAPEC-493: SOAP Array Blowup SOAP Array Blowup CAPEC-494: TCP Fragmentation TCP Fragmentation CAPEC-495: UDP Fragmentation UDP Fragmentation CAPEC-496: ICMP Fragmentation ICMP Fragmentation CAPEC-528: XML Flood XML Flood
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.14 }} 0.00%

score

0.47251

percentile

CVSS31 - Vulnerability Scoring System
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