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CVE-2024-1402

MEDIUMCVSS 4.3/10EPSS 0.52%

Last modified

CVE-2024-1402 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post.  . EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post. 

Metrics

CVSS 3.1
4.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS Probability
0.52%

40.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MattermostMattermost Server<= 8.1.7
MattermostMattermost Server>= 9.0.0, <= 9.1.4
MattermostMattermost Server>= 9.2.0, <= 9.2.3

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2024-1402?
Mattermost fails to check if a custom emoji reaction exists when sending it to a post and to limit the amount of custom emojis allowed to be added in a post, allowing an attacker sending a huge amount of non-existent custom emojis in a post to crash the mobile app of a user seeing the post and to crash the server due to overloading when clients attempt to retrive the aforementioned post. 
How severe is CVE-2024-1402?
CVE-2024-1402 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.
How do I fix CVE-2024-1402?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-1402?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST