Skip to navigation

CVE Database

CVE-2010-2023

Impact: Moderate
Public: 2010-06-03
Bugzilla: 600093: CVE-2010-2023 exim: hard-link following vulnerability in mailbox handling

Details

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2010-2023 from the MITRE CVE dictionary and NIST NVD.

Statement

The Red Hat Security Response Team has rated this issue as having low security impact. By default, /var/spool/mail/ is not provided with permissions to make an attack scenario possible, and there is no reason for permissions to be relaxed in such a way as to make it possible. We therefore have no plans to fix this flaw in Red Hat Enterprise Linux 4 or 5.

CVSS v2 metrics

Base Score: 4.3
Base Metrics: AV:N/AC:M/Au:N/C:N/I:P/A:N
Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: None
Integrity Impact: Partial
Availability Impact: None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date

External References

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.