CVE-2023-43650 Non-MFA account takeover via brute-force attack on weak password reset code in jumpserver
Attackers can take over accounts by brute-forcing weak password reset codes due to missing rate limiting in JumpServer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-43650?
CVE-2023-43650 is a high-severity authentication bypass vulnerability in jumpserver, published on 27 Sep 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-640
Which versions are affected by CVE-2023-43650?
It affects 1 product.
Products include Fit2cloud Jumpserver.
How do I fix CVE-2023-43650?
No fix has been published for CVE-2023-43650 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2023-43650 being exploited?
There is no known exploitation of CVE-2023-43650 in the wild and no public exploit code.
Other vulnerabilities in jumpserver
- CVE-2024-40628 Arbitrary File Read in Ansible Playbooks in Jumpserver
- CVE-2024-40629 Arbitrary File Write in Ansible Playbooks leads to RCE in Jumpserver
- CVE-2024-29201 JumpServer's insecure Ansible playbook validation leads to RCE in Celery
- CVE-2024-29202 JumpServer vulnerable to Jinja2 template injection in Ansible leads to RCE in Celery
- CVE-2023-48193 Security feature bypass in n/a
Sources
Also known as GHSA-mwx4-8fwc-2xvw.