CVE-2020-8021: unauthorized read access to files where sourceaccess is disabled via a crafted _service file in Open Build Service

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-05-19 · updated 2026-06-17
Weakness: CWE-269

Description

a Improper Access Control vulnerability in of Open Build Service allows remote attackers to read files of an OBS package where the sourceaccess/access is disabled This issue affects: Open Build Service versions prior to 2.10.5.

Affected products

Debian Linux: 9.0
openSUSE Open Build Service: before 2.10.5 — fixed in 2.10.5

How to fix

Upgrade to a fixed version: openSUSE Open Build Service 2.10.5. Check the vendor advisory for mitigations.

References

https://bugzilla.suse.com/show_bug.cgi?id=1171649
https://lists.debian.org/debian-lts-announce/2021/02/msg00006.html
https://bugzilla.suse.com/show_bug.cgi?id=1171649
https://lists.debian.org/debian-lts-announce/2021/02/msg00006.html

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