Published:
31 August 1999
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-1999.129 -- RHSA-1999:034-01 Buffer overflow in proftpd 01 September 1999 =========================================================================== Red Hat, Inc. has released the following advisory concerning a buffer overflow vulnerability in proftpd. This vulnerability may allow remote users to gain privileged access. - - --------------------------BEGIN INCLUDED TEXT-------------------- - - -----BEGIN PGP SIGNED MESSAGE----- - - - --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: Buffer overflow in proftpd Advisory ID: RHSA-1999:034-01 Issue date: 1999-08-31 Keywords: proftpd buffer overflow remote exploit - - - --------------------------------------------------------------------- 1. Topic: proftpd is a ftp server that is shipped by Red Hat as part of the Powertools CD collection. It is not enabled nor installed by default. However, if you have switched to proftpd and you are using the version shipped on the Red Hat Powertoold 6.0 CD you are at risk. 2. Bug IDs fixed: N/A 3. Relevant releases/architectures: Red Hat Linux 6.0, all architectures 4. Obsoleted by: 5. Conflicts with: 6. RPMs required: Intel: ftp://updates.redhat.com/powertools/6.0/i386/proftpd-1.2.0pre3-6.i386.rpm Alpha: ftp://updates.redhat.com/powertools/6.0/alpha/proftpd-1.2.0pre3-6.alpha.rpm Sparc: ftp://updates.redhat.com/powertools/6.0/sparc/proftpd-1.2.0pre3-6.sparc.rpm Source packages: ftp://updates.redhat.com/powertools/6.0/SRPMS/proftpd-1.2.0pre3-6.src.rpm 7. Problem description: An explotable buffer overflow security problem in the proftpd daemon has been fixed. The vulnerability is actively exploited on the Internet and site administrators are stronly advised to upgrade to the new packages. Thanks to the members of the BUGTRAQ mailing list and Nic Bellamy for providing a fix. 8. Solution: For each RPM for your particular architecture, run: rpm -Uvh <filename> where filename is the name of the RPM. 9. Verification: MD5 sum Package Name - - - -------------------------------------------------------------------------- 71dfdb94daea8b6f043016ff25d80ccc i386/proftpd-1.2.0pre3-6.i386.rpm a8f2d44de9fb5607c5a43c761af5f1a2 alpha/proftpd-1.2.0pre3-6.alpha.rpm 9091ad2a484b85263576c4a6b3c8b4ab sparc/proftpd-1.2.0pre3-6.sparc.rpm 5e374a647f6fd104046b726bf221b3cd SRPMS/proftpd-1.2.0pre3-6.src.rpm These packages are PGP 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 --nopgp <filename> 10. References: Cristian - - - -- - - - ---------------------------------------------------------------------- Cristian Gafton -- gafton@redhat.com -- Red Hat, Inc. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ "How could this be a problem in a country where we have Intel and Microsoft?" --Al Gore on Y2K - - -----BEGIN PGP SIGNATURE----- Version: 2.6.2 iQCVAwUBN8wvZfGvxKXU9NkBAQFRygP/S0EDg4WsFmD6Uu9PTre8RUNt30nfyOjO 944YiJQj7mXvirv5q6hkwyG3kx3j1E78bxjvepY35FTAq11Hs9DchO926aoWXExx 7sUM8nYbE+4Iq8nEQYzvKmeSMUM0yQys7opZMxU0he+8DhiW3Zo88TKBRY8OfAqZ M/xkEEaorsU= =9Dt9 - - -----END PGP SIGNATURE----- - - --------------------------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 will 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). On call after hours for emergencies. - -------------------------------------------------------------------------- Last Revised: 21st December 1999 Fixed RHSA number in the title. - -------------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBOF+Maih9+71yA2DNAQEL9wP8CblCmahkrpKCE5zImGedEb7qsNEcw/WW z7fIwXhvdehIGHh6UYU7z75a/uS5EcDI4p+vSEMhlgyegLCNh7sJFS9bGhZcl8eE quNlmqqaskRehvg5PgbEQYHjIkrYIxL5n9l/R/lngTJfHg6ipwyW5wTvnZLHccE9 HHDhtqGILWg= =J80l -----END PGP SIGNATURE-----