Strix
26.1K

CVE-2021-39899

MEDIUMCVSS 4.2/10EPSS 0.25%

Last modified

CVE-2021-39899 is a medium-severity vulnerability rated 4.2/10 on the CVSS scale. In all versions of GitLab CE/EE, an attacker with physical access to a user’s machine may brute force the user’s password via the change password function. There is a rate limit in place, but the attack may still be conducted by stealing the session id from the physical compromise of the account and splitting the attack over several IP addresses and passing in the compromised session value from these various locations.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

In all versions of GitLab CE/EE, an attacker with physical access to a user’s machine may brute force the user’s password via the change password function. There is a rate limit in place, but the attack may still be conducted by stealing the session id from the physical compromise of the account and splitting the attack over several IP addresses and passing in the compromised session value from these various locations.

Metrics

CVSS 3.1
4.2/10

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
0.25%

16.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GitlabGitlab>= 1.0.0, < 14.1.7
GitlabGitlab>= 14.2, < 14.2.5
GitlabGitlab>= 14.3, < 14.3.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-39899?
In all versions of GitLab CE/EE, an attacker with physical access to a user’s machine may brute force the user’s password via the change password function. There is a rate limit in place, but the attack may still be conducted by stealing the session id from the physical compromise of the account and splitting the attack over several IP addresses and passing in the compromised session value from these various locations.
How severe is CVE-2021-39899?
CVE-2021-39899 has a CVSS score of 4.2/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2021-39899?
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-2021-39899?

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

Scan your code now

Source: NVD / NIST