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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0526 -- RHSA-2003:245-01 Updated wu-ftpd packages fix remote vulnerability. 01 August 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: wu-ftpd Publisher: Red Hat Operating System: Red Hat Linux 8.0 - i386 Red Hat Linux 7.3 - i386 Red Hat Linux 7.2 - i386, ia64 Red Hat Linux 7.1 for pSeries (64 bit) - ppc Red Hat Linux 7.1 for iSeries (64 bit) - ppc Red Hat Linux 7.1 - i386 Platform: i386 PowerPC IA-64 Impact: Root Compromise Access Required: Remote CVE Names: CAN-2003-0466 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Updated wu-ftpd packages fix remote vulnerability. Advisory ID: RHSA-2003:245-01 Issue date: 2003-07-31 Updated on: 2003-07-31 Product: Red Hat Linux Keywords: ftpd Cross references: Obsoletes: RHSA-2001:157 CVE Names: CAN-2003-0466 - - --------------------------------------------------------------------- 1. Topic: Updated wu-ftpd packages are now available that fix a remotely exploitable security issue. 2. Relevant releases/architectures: Red Hat Linux 7.1 - i386 Red Hat Linux 7.1 for iSeries (64 bit) - ppc Red Hat Linux 7.1 for pSeries (64 bit) - ppc Red Hat Linux 7.2 - i386, ia64 Red Hat Linux 7.3 - i386 Red Hat Linux 8.0 - i386 3. Problem description: The wu-ftpd package contains the Washington University FTP (File Transfer Protocol) server daemon. FTP is a method of transferring files between computers on a network. An off-by-one bug has been discovered in versions of wu-ftpd up to and including 2.6.2. On a vulnerable system, a remote attacker would be able to exploit this bug to gain root privileges. Red Hat Linux 7.1 and 7.2 contain a version of wu-ftpd that is affected by this bug, although it is believed this issue will not be remotely exploitable due to compiler padding of the buffer targeted for the overflow. Red Hat Linux 7.3 and 8.0 contain a version of wu-ftpd that is remotely exploitable. Red Hat advises all users of wu-ftpd to upgrade to these erratum packages, which contain a security patch and is not vulnerable to this issue. Red Hat would like to thank Wojciech Purczynski and Janusz Niewiadomski of ISEC Security Research for their responsible disclosure of this issue. 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. RPMs required: Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/wu-ftpd-2.6.2-11.71.1.i386.rpm Red Hat Linux 7.1 for iSeries (64 bit): SRPMS: ftp://updates.redhat.com/7.1/en/os/iSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm ppc: ftp://updates.redhat.com/7.1/en/os/iSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm Red Hat Linux 7.1 for pSeries (64 bit): SRPMS: ftp://updates.redhat.com/7.1/en/os/pSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm ppc: ftp://updates.redhat.com/7.1/en/os/pSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/wu-ftpd-2.6.2-11.72.1.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/wu-ftpd-2.6.2-11.72.1.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/wu-ftpd-2.6.2-11.72.1.ia64.rpm Red Hat Linux 7.3: SRPMS: ftp://updates.redhat.com/7.3/en/os/SRPMS/wu-ftpd-2.6.2-11.73.1.src.rpm i386: ftp://updates.redhat.com/7.3/en/os/i386/wu-ftpd-2.6.2-11.73.1.i386.rpm Red Hat Linux 8.0: SRPMS: ftp://updates.redhat.com/8.0/en/os/SRPMS/wu-ftpd-2.6.2-12.src.rpm i386: ftp://updates.redhat.com/8.0/en/os/i386/wu-ftpd-2.6.2-12.i386.rpm 6. Verification: MD5 sum Package Name - - -------------------------------------------------------------------------- eaad5f7ffbf2399c13623da2c6ff4e83 7.1/en/os/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm ecbd80d787844a3ab579e6058b0704c2 7.1/en/os/i386/wu-ftpd-2.6.2-11.71.1.i386.rpm eaad5f7ffbf2399c13623da2c6ff4e83 7.1/en/os/iSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm cf9324b0e936ffb3aa7a738f26108eb6 7.1/en/os/iSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm eaad5f7ffbf2399c13623da2c6ff4e83 7.1/en/os/pSeries/SRPMS/wu-ftpd-2.6.2-11.71.1.src.rpm cf9324b0e936ffb3aa7a738f26108eb6 7.1/en/os/pSeries/ppc/wu-ftpd-2.6.2-11.71.1.ppc.rpm 3f526a5e04806d71560c7357189c08fa 7.2/en/os/SRPMS/wu-ftpd-2.6.2-11.72.1.src.rpm 22ce902ae1255927825bec7a6cbd9a68 7.2/en/os/i386/wu-ftpd-2.6.2-11.72.1.i386.rpm 8587632893b8a74580b50cdf1a4923f6 7.2/en/os/ia64/wu-ftpd-2.6.2-11.72.1.ia64.rpm a25b0c5c9575cfa2e18578b8ec30e7ab 7.3/en/os/SRPMS/wu-ftpd-2.6.2-11.73.1.src.rpm 3c53df7e43666c6b1dfc6b9bbbe4da06 7.3/en/os/i386/wu-ftpd-2.6.2-11.73.1.i386.rpm dca07c4e90f308b49f8ac6b8d463536f 8.0/en/os/SRPMS/wu-ftpd-2.6.2-12.src.rpm d7b8fc5c0f9c0938dbddcea76f8e1e22 8.0/en/os/i386/wu-ftpd-2.6.2-12.i386.rpm These packages are GPG signed by Red Hat for security. Our key is available from http://www.redhat.com/security/keys.html You can verify each package with the following command: rpm --checksig -v <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: md5sum <filename> 7. References: http://isec.pl/vulnerabilities/isec-0011-wu-ftpd.txt http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0466 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at http://www.redhat.com/solutions/security/news/contact.html Copyright 2003 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE/KUFJXlSAg2UNWIIRAgMVAKCa5B/pchmh8Ki32hi1t8IgLnwUmwCfXm2o mk4N+bHFq1MAO+Vl5O95s10= =uvqq - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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On call after hours for member emergencies only. -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBPym1bSh9+71yA2DNAQHvRAP/bvthzMxUQVYgVVShs5IqTm6BKvrk+1Nu O8fkHm61puWiye+6rdRZOrR07VGId2rzP8TKE78+3QSYOa657FFEUXE6vNlZ6PMm Ton6TOigAuPrOFggmnvvBLOKdpgG/y8C8lNoztNSIl/5DBSKeLU3HMMTdr/BNg9/ X5oiigi05kQ= =BXhT -----END PGP SIGNATURE-----