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TITLE:
logrotate Privilege Escalation Security Issue

SECUNIA ADVISORY ID:
SA42559

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/42559/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42559

RELEASE DATE:
2010-12-22

DISCUSS ADVISORY:
http://secunia.com/advisories/42559/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/42559/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=42559

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A security issue has been discovered in logrotate, which can be
exploited by malicious, local users to perform certain actions with
escalated privileges.

The logrotate utility does not properly handle symlinked files. This
can be exploited to e.g. change the ownership and permissions of
arbitrary files via symlink attacks.

The security issue is confirmed in version 3.7.9. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Debian bug by Florian Zumbiehl.

ORIGINAL ADVISORY:
Debian Bug #388608:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=388608

http://lists.debian.org/debian-qa/2010/11/msg00024.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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Definitions: (Criticality, Where etc.)
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Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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