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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2000.152 -- RHSA-2000:039-02 remote root exploit (SITE EXEC) fixed 26 June 2000 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: wu-ftpd Vendor: Red Hat Operating System: Red Hat Linux Linux Unix Platform: N/A Impact: Root Compromise Access Required: Remote Ref: AA-2000.02 - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: remote root exploit (SITE EXEC) fixed Advisory ID: RHSA-2000:039-02 Issue date: 2000-06-23 Updated on: 2000-06-23 Product: Red Hat Linux Keywords: wu-ftpd, root exploit, site exec, buffer overrun Cross references: N/A - --------------------------------------------------------------------- 1. Topic: A security bug in wu-ftpd can permit remote users, even without an account, to gain root access. The new version closes the hole. 2. Relevant releases/architectures: Red Hat Linux 5.2 - i386 alpha sparc Red Hat Linux 6.2 - i386 alpha sparc 3. Problem description: An exploitable buffer overrun existed in wu-ftpd code's status update code. Fixed by adding bounds checking by passing the status strings through %s. 4. Solution: For each RPM for your particular architecture, run: rpm -Fvh [filename] where filename is the name of the RPM. 5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info): N/A 6. RPMs required: Red Hat Linux 5.2: i386: ftp://updates.redhat.com/5.2/i386/wu-ftpd-2.6.0-2.5.x.i386.rpm alpha: ftp://updates.redhat.com/5.2/alpha/wu-ftpd-2.6.0-2.5.x.alpha.rpm sparc: ftp://updates.redhat.com/5.2/sparc/wu-ftpd-2.6.0-2.5.x.sparc.rpm sources: ftp://updates.redhat.com/5.2/SRPMS/wu-ftpd-2.6.0-2.5.x.src.rpm Red Hat Linux 6.2: i386: ftp://updates.redhat.com/6.2/i386/wu-ftpd-2.6.0-14.6x.i386.rpm alpha: ftp://updates.redhat.com/6.2/alpha/wu-ftpd-2.6.0-14.6x.alpha.rpm sparc: ftp://updates.redhat.com/6.2/sparc/wu-ftpd-2.6.0-14.6x.sparc.rpm sources: ftp://updates.redhat.com/6.2/SRPMS/wu-ftpd-2.6.0-14.6x.src.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- e1f3b09d8ad0067fa7fd22e7afe77e64 5.2/SRPMS/wu-ftpd-2.6.0-2.5.x.src.rpm 7c2f89b3f8533ec54a36c5dde5995ce6 5.2/alpha/wu-ftpd-2.6.0-2.5.x.alpha.rpm 8dbd0b0f1fa1d0755393942cb4cb141d 5.2/i386/wu-ftpd-2.6.0-2.5.x.i386.rpm 5d9df2512a15e5c8914f398d980b12e7 5.2/sparc/wu-ftpd-2.6.0-2.5.x.sparc.rpm 67349a75b767585628912b840e52806e 6.2/SRPMS/wu-ftpd-2.6.0-14.6x.src.rpm fafe870fc91762dd7e9182df3b4dfee5 6.2/alpha/wu-ftpd-2.6.0-14.6x.alpha.rpm 50c11f333641277ab75e6207bffb13b4 6.2/i386/wu-ftpd-2.6.0-14.6x.i386.rpm 8abba6ffa660d1c221581855630ed40d 6.2/sparc/wu-ftpd-2.6.0-14.6x.sparc.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/corp/contact.html You can verify each package with the following command: rpm --checksig <filename> If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command: rpm --checksig --nogpg <filename> 8. References: N/A - --------------------------END INCLUDED TEXT-------------------- This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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