CVE-2010-2023

exim: hard-link following vulnerability in mailbox handling

Published Jun 7, 2010 CVSS 2.0 · 4.4 Medium EPSS < 1% KEV · Not listed
Description
transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2010-2043 transports/appendfile.c in Exim before 4.72, when a world-writable sticky-bit mail directory is used, does not verify the st_nlink field of mailbox files, which allows local users to cause a denial of service or possibly gain privileges by creating a hard link to another user's file.
Ubuntu USN Ubuntu USN USN-1060-1 Exim vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Aug 7, 2024, 2:17 AM
Reserved
May 24, 2010, 12:00 AM
Status
Modified
Published
Jun 7, 2010, 5:12 PM
Modified
Jun 16, 2026, 11:19 PM
Severity
Moderate
Public date
Jun 3, 2010, 12:00 AM