CVE-2022-1337

OOM DoS in Mattermost image proxy

Description

The image proxy component in Mattermost version 6.4.1 and earlier allocates memory for multiple copies of a proxied image, which allows an authenticated attacker to crash the server via links to very large image files.

Remediation

Solution:

  • Upgrade to Mattermost version 6.4.2, 6.3.5, 6.2.5, or 5.37.9.

Workaround:

  • Disable the image proxy or use an external proxy.

Categories

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.61%
Vendor Advisory mattermost.com
Affected: Mattermost Mattermost
Published at:
Updated at:

References

Link Tags
https://mattermost.com/security-updates/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-1337?
CVE-2022-1337 has been scored as a medium severity vulnerability.
How to fix CVE-2022-1337?
To fix CVE-2022-1337: Upgrade to Mattermost version 6.4.2, 6.3.5, 6.2.5, or 5.37.9.
Is CVE-2022-1337 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-1337 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-1337?
CVE-2022-1337 affects Mattermost Mattermost.
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