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TITLE:
RPM Package Manager Package Upgrade File Metadata Update Weaknesses

SECUNIA ADVISORY ID:
SA40028

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/40028/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=40028

RELEASE DATE:
2010-06-04

DISCUSS ADVISORY:
http://secunia.com/advisories/40028/#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/40028/

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=40028

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:
Some weaknesses have been reported in RPM Package Manager, which can
be exploited by malicious, local users to gain escalated privileges.

1) The application does not properly remove e.g. the setuid and
setgid bits from binaries when upgrading a package, which can be
exploited to gain escalated privileges by creating hardlinks to the
old binary.

2) The application does not properly update the POSIX file
capabilities when e.g. erasing or renaming a binary, which can be
exploited to keep the previous capabilities by creating hardlinks to
the old binary.

SOLUTION:
Fixed in the GIT repository.

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

PROVIDED AND/OR DISCOVERED BY:
Matt McCutchen

ORIGINAL ADVISORY:
Red Hat Bug #598775:
https://bugzilla.redhat.com/show_bug.cgi?id=598775

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:
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private users keeping their systems up to date against the latest
vulnerabilities.

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