CVE-2023-46739 Timing attack can leak user passwords

What is CVE-2023-46739?

CVE-2023-46739 is a medium-severity vulnerability in cubefs, published on 3 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

CubeFS is an open-source cloud-native file storage system. A vulnerability was found during in the CubeFS master component in versions prior to 3.3.1 that could allow an untrusted attacker to steal user passwords by carrying out a timing attack. The root case of the vulnerability was that CubeFS used raw string comparison of passwords. The vulnerable part of CubeFS was the UserService of the master component. The UserService gets instantiated when starting the server of the master component. The issue has been patched in v3.3.1. For impacted users, there is no other way to mitigate the issue besides upgrading.

Weakness: CWE-203

Which versions are affected by CVE-2023-46739?

3 open source packages ship an affected version, including github.com/cubefs/cubefs. It affects 1 product.

Products include Linuxfoundation Cubefs.

How do I fix CVE-2023-46739?

Upgrade github.com/cubefs/cubefs to 3.3.1 or later.

Is CVE-2023-46739 being exploited?

There is no known exploitation of CVE-2023-46739 in the wild and no public exploit code.

Other vulnerabilities in cubefs

• CVE-2023-46738 Authenticated users can crash the CubeFS servers with maliciously crafted requests Medium 6.5
• CVE-2023-46740 Insecure random string generator used for sensitive data Medium 6.5
• CVE-2023-30512 CubeFS allows Kubernetes cluster-level privilege escalation Medium 6.5
• CVE-2023-46741 CubeFS leaks magic secret key when starting Blobstore access service Medium 4.8
• CVE-2023-46742 CubeFS leaks users key in logs Medium 4.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-8579-7p32-f398, GO-2024-2432.