CVE-2023-43650

Public Exploit
Non-MFA account takeover via brute-force attack on weak password reset code in jumpserver

Description

JumpServer is an open source bastion host. The verification code for resetting user's password is vulnerable to brute-force attacks due to the absence of rate limiting. JumpServer provides a feature allowing users to reset forgotten passwords. Affected users are sent a 6-digit verification code, ranging from 000000 to 999999, to facilitate the password reset. Although the code is only available in 1 minute, this window potentially allows for up to 1,000,000 validation attempts. This issue has been addressed in versions 2.28.20 and 3.7.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.33%
Vendor Advisory github.com
Affected: jumpserver jumpserver
Published at:
Updated at:

References

Link Tags
https://github.com/jumpserver/jumpserver/security/advisories/GHSA-mwx4-8fwc-2xvw vendor advisory exploit
https://www.sonarsource.com/blog/diving-into-jumpserver-attackers-gateway-to-internal-networks-1-2 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2023-43650?
CVE-2023-43650 has been scored as a high severity vulnerability.
How to fix CVE-2023-43650?
To fix CVE-2023-43650, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-43650 being actively exploited in the wild?
It is possible that CVE-2023-43650 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-43650?
CVE-2023-43650 affects jumpserver jumpserver.
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