CVE-2021-31998: inn: %post calls user owned file allowing local privilege escalation to root

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-06-10 · updated 2026-06-17
Weakness: CWE-276

Description

A Incorrect Default Permissions vulnerability in the packaging of inn of SUSE Linux Enterprise Server 11-SP3; openSUSE Backports SLE-15-SP2, openSUSE Leap 15.2 allows local attackers to escalate their privileges from the news user to root. This issue affects: SUSE Linux Enterprise Server 11-SP3 inn version inn-2.4.2-170.21.3.1 and prior versions. openSUSE Backports SLE-15-SP2 inn versions prior to 2.6.2. openSUSE Leap 15.2 inn versions prior to 2.6.2.

Affected products

openSUSE Inn: through 2.4.2-170.21.3.1; before 2.6.2 — fixed in 2.6.2

How to fix

Upgrade to a fixed version: openSUSE Inn 2.6.2. Check the vendor advisory for mitigations.

References

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