CVE-2021-29133

Name: CVE-2021-29133
Creator: NVD / NIST
Published: 2021-03-24T07:15:13.007+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.08%

Last modified Jun 17, 2026

CVE-2021-29133 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Lack of verification in haserl, a component of Alpine Linux Configuration Framework, before 0.9.36 allows local users to read the contents of any file on the filesystem.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.

Description

Lack of verification in haserl, a component of Alpine Linux Configuration Framework, before 0.9.36 allows local users to read the contents of any file on the filesystem.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

1.08%

60.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Haserl Project	Haserl	< 0.9.36

References

https://github.com/rapid7/metasploit-framework/pull/14833Exploit, Patch, Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/14833/commits/5bf6b2d094deb22fa8183ce161b90cbe4fd40a70Patch, Third Party Advisory
https://gitlab.alpinelinux.org/alpine/aports/-/issues/12539Issue Tracking, Vendor Advisory
https://twitter.com/steaIth/status/1364940271054712842Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/14833Exploit, Patch, Third Party Advisory
https://github.com/rapid7/metasploit-framework/pull/14833/commits/5bf6b2d094deb22fa8183ce161b90cbe4fd40a70Patch, Third Party Advisory
https://gitlab.alpinelinux.org/alpine/aports/-/issues/12539Issue Tracking, Vendor Advisory
https://twitter.com/steaIth/status/1364940271054712842Third Party Advisory

Timeline

Published: Mar 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-29133?

Lack of verification in haserl, a component of Alpine Linux Configuration Framework, before 0.9.36 allows local users to read the contents of any file on the filesystem.

How severe is CVE-2021-29133?

CVE-2021-29133 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.

How do I fix CVE-2021-29133?

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-2021-29133?

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

Scan your code now

Source: NVD / NIST