CVE-2022-31256 - CVE House
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Status published High CVE-2022-31256

sendmail: mail to root privilege escalation via sm-client.pre script

Vulnerability Description

A Improper Link Resolution Before File Access ('Link Following') vulnerability in a script called by the sendmail systemd service of openSUSE Factory allows local attackers to escalate from user mail to root. This issue affects: SUSE openSUSE Factory sendmail versions prior to 8.17.1-1.1.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Matthias Gerstner and Filippo Bonazzi from SUSE

References

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Affected Vendor

Affected Software

openSUSE Factory
Vulnerable Versions:
sendmail

Timeline

Official Publish: October 26th, 2022
Last Modified: May 9th, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses (CWE)

CWE-59

MITRE ATT&CK TTPs

T1574 Hijack Execution Flow
Privilege Escalation
T1222 File and Directory Permissions Modification
Defense Evasion
T1005 Data from Local System
Collection
T1565 Data Manipulation
Impact
T1078 Valid Accounts
Persistence