Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2001.393 -- RHSA-2001:103-04 Updated fetchmail packages available 11 September 2001 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: fetchmail Vendor: Red Hat Operating System: Red Hat Linux 5.2 Red Hat Linux 6.2 Red Hat Linux 7.0 Red Hat Linux 7.1 Platform: Alpha i386 Sparc IA-64 Impact: Reduced Security Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated fetchmail packages available Advisory ID: RHSA-2001:103-04 Issue date: 2001-08-23 Updated on: 2001-09-06 Product: Red Hat Linux Keywords: fetchmail array index bounds Cross references: Obsoletes: RHBA-2000:106 - --------------------------------------------------------------------- 1. Topic: Updated fetchmail packages are now available for Red Hat Linux 5.2, 6.2, 7, and 7.1. These packages close a remotely-exploitable vulnerability in fetchmail. 2. Relevant releases/architectures: Red Hat Linux 5.2 - alpha, i386, sparc Red Hat Linux 6.2 - alpha, i386, sparc Red Hat Linux 7.0 - alpha, i386 Red Hat Linux 7.1 - alpha, i386, ia64 3. Problem description: Fetchmail versions up to 5.8.9 are susceptible to remote attacks from malicious servers. When fetchmail attempts to create an index of messages in the remote mailbox being polled, it uses index numbers sent by the server as an index into an internal array. If a server sends fetchmail a negative number, fetchmail will attempt to write data outside the bounds of the array. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. 5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info): 6. RPMs required: Red Hat Linux 5.2: SRPMS: ftp://updates.redhat.com/5.2/en/os/SRPMS/fetchmail-5.9.0-0.5.1.src.rpm alpha: ftp://updates.redhat.com/5.2/en/os/alpha/fetchmail-5.9.0-0.5.1.alpha.rpm ftp://updates.redhat.com/5.2/en/os/alpha/fetchmailconf-5.9.0-0.5.1.alpha.rpm i386: ftp://updates.redhat.com/5.2/en/os/i386/fetchmail-5.9.0-0.5.1.i386.rpm ftp://updates.redhat.com/5.2/en/os/i386/fetchmailconf-5.9.0-0.5.1.i386.rpm sparc: ftp://updates.redhat.com/5.2/en/os/sparc/fetchmail-5.9.0-0.5.1.sparc.rpm ftp://updates.redhat.com/5.2/en/os/sparc/fetchmailconf-5.9.0-0.5.1.sparc.rpm Red Hat Linux 6.2: SRPMS: ftp://updates.redhat.com/6.2/en/os/SRPMS/fetchmail-5.9.0-0.6.2.src.rpm alpha: ftp://updates.redhat.com/6.2/en/os/alpha/fetchmail-5.9.0-0.6.2.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/fetchmailconf-5.9.0-0.6.2.alpha.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/fetchmail-5.9.0-0.6.2.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/fetchmailconf-5.9.0-0.6.2.i386.rpm sparc: ftp://updates.redhat.com/6.2/en/os/sparc/fetchmail-5.9.0-0.6.2.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/fetchmailconf-5.9.0-0.6.2.sparc.rpm Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/en/os/SRPMS/fetchmail-5.9.0-0.7.1.src.rpm alpha: ftp://updates.redhat.com/7.0/en/os/alpha/fetchmail-5.9.0-0.7.1.alpha.rpm ftp://updates.redhat.com/7.0/en/os/alpha/fetchmailconf-5.9.0-0.7.1.alpha.rpm i386: ftp://updates.redhat.com/7.0/en/os/i386/fetchmail-5.9.0-0.7.1.i386.rpm ftp://updates.redhat.com/7.0/en/os/i386/fetchmailconf-5.9.0-0.7.1.i386.rpm Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/fetchmail-5.9.0-0.7.1.src.rpm alpha: ftp://updates.redhat.com/7.1/en/os/alpha/fetchmail-5.9.0-0.7.1.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/fetchmailconf-5.9.0-0.7.1.alpha.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/fetchmail-5.9.0-0.7.1.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/fetchmailconf-5.9.0-0.7.1.i386.rpm ia64: ftp://updates.redhat.com/7.1/en/os/ia64/fetchmail-5.9.0-0.7.1.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/fetchmailconf-5.9.0-0.7.1.ia64.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 7503b049db6ff4f1474f226d274fe92d 5.2/en/os/SRPMS/fetchmail-5.9.0-0.5.1.src.rpm 31a45847fced4be1adcde11e9f2aa757 5.2/en/os/alpha/fetchmail-5.9.0-0.5.1.alpha.rpm e9eb76daa617641fcb3632fdbc5e4dac 5.2/en/os/alpha/fetchmailconf-5.9.0-0.5.1.alpha.rpm ebda08b540c02b2db58cbccde1d99f40 5.2/en/os/i386/fetchmail-5.9.0-0.5.1.i386.rpm 7619346da94d964d51af89df1dc89f18 5.2/en/os/i386/fetchmailconf-5.9.0-0.5.1.i386.rpm 446347177fbf9caf0fc9cea8756ccea9 5.2/en/os/sparc/fetchmail-5.9.0-0.5.1.sparc.rpm fabd00863865631c986c80e49b088f55 5.2/en/os/sparc/fetchmailconf-5.9.0-0.5.1.sparc.rpm b74380ba52b3ff09d53040a3bd18abfb 6.2/en/os/SRPMS/fetchmail-5.9.0-0.6.2.src.rpm d7a2cd0a97ea5265b413921a2e6fcd8c 6.2/en/os/alpha/fetchmail-5.9.0-0.6.2.alpha.rpm 26ea94e37d0d88823e0f85a3e2c07ef4 6.2/en/os/alpha/fetchmailconf-5.9.0-0.6.2.alpha.rpm 3217a12fcf834f1a94b22e3a1f998899 6.2/en/os/i386/fetchmail-5.9.0-0.6.2.i386.rpm bd70942262b151a416111483612d7991 6.2/en/os/i386/fetchmailconf-5.9.0-0.6.2.i386.rpm e62237b1adef610f52192d1b9fbbfc67 6.2/en/os/sparc/fetchmail-5.9.0-0.6.2.sparc.rpm 88966042a39e1ff9b344774bff6f8df6 6.2/en/os/sparc/fetchmailconf-5.9.0-0.6.2.sparc.rpm 43dd892f01a53615826fd05d5c5d9182 7.0/en/os/SRPMS/fetchmail-5.9.0-0.7.1.src.rpm 1edf22a362dda414de5f1a9a437308d8 7.0/en/os/alpha/fetchmail-5.9.0-0.7.1.alpha.rpm 2f594d9a083f553e4b0f10e5f866c621 7.0/en/os/alpha/fetchmailconf-5.9.0-0.7.1.alpha.rpm 50d7a9d1276701fc425a6bc42d9e4e95 7.0/en/os/i386/fetchmail-5.9.0-0.7.1.i386.rpm 77e22d5c9d02d26ba9013df9e25ee71d 7.0/en/os/i386/fetchmailconf-5.9.0-0.7.1.i386.rpm 43dd892f01a53615826fd05d5c5d9182 7.1/en/os/SRPMS/fetchmail-5.9.0-0.7.1.src.rpm 1edf22a362dda414de5f1a9a437308d8 7.1/en/os/alpha/fetchmail-5.9.0-0.7.1.alpha.rpm 2f594d9a083f553e4b0f10e5f866c621 7.1/en/os/alpha/fetchmailconf-5.9.0-0.7.1.alpha.rpm 50d7a9d1276701fc425a6bc42d9e4e95 7.1/en/os/i386/fetchmail-5.9.0-0.7.1.i386.rpm 77e22d5c9d02d26ba9013df9e25ee71d 7.1/en/os/i386/fetchmailconf-5.9.0-0.7.1.i386.rpm e6900c3bdd22ed841ce0c681e5bf8942 7.1/en/os/ia64/fetchmail-5.9.0-0.7.1.ia64.rpm 911f4ea0e059f39695583e3af90992b5 7.1/en/os/ia64/fetchmailconf-5.9.0-0.7.1.ia64.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: http://www.securityfocus.com/bid/3164 http://www.securityfocus.com/bid/3166 Copyright(c) 2000, 2001 Red Hat, Inc. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBO54bmCh9+71yA2DNAQHy8wP+P1WqKk8ZRHLWrmGKUQqk4GYO55AFx3pb P+sGlC+PbcPBpquTlFFA8rHBc7QXcUcOqt93o4aA1agm43oGPpA8B2bYhB2uZJyB 70K5TW5e8R/nvmkspULHXFuyLYhls/1eJM2CkuvIBPEn8rhm5hebnei2CDVV9JuM oETgqmNEt1M= =/PPH -----END PGP SIGNATURE-----