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Red Hat Linux 6.2 RHSA-2000:059-02 Critical: Mgetty File Destruction

The mgetty-sendfax package contains a vulnerability. Updated packages are available.. ` --------------------------------------------------------------------- Red Hat, Inc. Security Advisory Synopsis: Updated mgetty packages are now available. Advisory ID: RHSA-2000:059-02 Issue date: 2000-09-07 Updated on: 2000-09-11 Product: Red Hat Linux Keywords: N/A Cross references: N/A --------------------------------------------------------------------- 1. Topic: The mgetty-sendfax package contains a vulnerability which allows any user with access to the /var/tmp directory to destroy any file on any mounted filesystem. 2. Relevant releases/architectures: Red Hat Linux 5.2 - i386, alpha, sparc Red Hat Linux 6.0 - i386, alpha, sparc Red Hat Linux 6.1 - i386, alpha, sparc Red Hat Linux 6.2 - i386, alpha, sparc Red Hat Linux 6.2E - i386, alpha, sparc 3. Problem description: The faxrunq and faxrunqd commands supplied with the mgetty-sendfax package use a file named /var/spool/fax/outgoing/.lastrun to keep track of the date and time when the faxrunq command was last run. /var/tmp is a world-writable directory, and no check is made to ensure that .lastrun is not a symbolic link to another file. A malicious user can create a symbolic link named /var/spool/fax/outgoing/.lastrun which points to any file on a mounted filesystem, and that file's contents will be destroyed the next time faxrunq is run. 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 ( for more info): 11874 - Mgetty packages default config is a security threat 17178 - one more security problem with mgetty 17179 - security problem with mgetty 6. RPMs required: Red Hat Linux 5.2: sparc: alpha: i386: sources: Red Hat Linux 6.0, 6.1, and 6.2: sparc: i386: alpha: sources: 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- b27b3fda4c0d0e7ac7b74353c4f1f145 5.2/SRPMS/mgetty-1.1.22-1.5.x.src.rpm b652205f79715212bef4c98f0d624f6d 5.2/alpha/mgetty-1.1.22-1.5.x.alpha.rpm dcc1ae6fa8cf601c3418d0affbf91039 5.2/alpha/mgetty-sendfax-1.1.22-1.5.x.alpha.rpm fe85f4fe5367d619b160987e912b7e24 5.2/alpha/mgetty-viewfax-1.1.22-1.5.x.alpha.rpm c2d5a314915ade00c98ba3fe4ce5712b 5.2/alpha/mgetty-voice-1.1.22-1.5.x.alpha.rpm f2fb0d8bf7f3b2140a3e21170399bc7c 5.2/i386/mgetty-1.1.22-1.5.x.i386.rpm e3773830446a4fba7555d70732a2938d 5.2/i386/mgetty-sendfax-1.1.22-1.5.x.i386.rpm 245f0b0f00e1687401edd65db86cd7a9 5.2/i386/mgetty-viewfax-1.1.22-1.5.x.i386.rpm f49678f5fc10297473b9415f7148fe94 5.2/i386/mgetty-voice-1.1.22-1.5.x.i386.rpm 45ff2fa65ed3411734a58162880ca19f 5.2/sparc/mgetty-1.1.22-1.5.x.sparc.rpm 6b69116697c9636a9d3fc59f209d74ff 5.2/sparc/mgetty-sendfax-1.1.22-1.5.x.sparc.rpm 9db43716f48517d4bd6cf22253e975f1 5.2/sparc/mgetty-viewfax-1.1.22-1.5.x.sparc.rpm 1fabca053ad9a520d3065c00d31bb9d9 5.2/sparc/mgetty-voice-1.1.22-1.5.x.sparc.rpm 7b50848c4ef1d27d2c40e9f5e2c74f75 6.2/SRPMS/mgetty-1.1.22-1.6.x.src.rpm 47d1b922a94ffe984a19285f2296907c 6.2/alpha/mgetty-1.1.22-1.6.x.alpha.rpm 52c43e4d8195ee483459c0b273f064f4 6.2/alpha/mgetty-sendfax-1.1.22-1.6.x.alpha.rpm 3927d2ead5ef89b93f3799190af12535 6.2/alpha/mgetty-viewfax-1.1.22-1.6.x.alpha.rpm 4eb7013dee45011c6c7958be40e000fe 6.2/alpha/mgetty-voice-1.1.22-1.6.x.alpha.rpm bd6ee4b93aa742d6cbc92bbae031c345 6.2/i386/mgetty-1.1.22-1.6.x.i386.rpm 3539dc2f5c5bef8819a8bc781e0d3405 6.2/i386/mgetty-sendfax-1.1.22-1.6.x.i386.rpm 3a17e82b398d69c294952773a098c105 6.2/i386/mgetty-viewfax-1.1.22-1.6.x.i386.rpm e61f3413ce93cd30c41eeb29caef2177 6.2/i386/mgetty-voice-1.1.22-1.6.x.i386.rpm 03d15f11dafe000ad55c3290974ae670 6.2/sparc/mgetty-1.1.22-1.6.x.sparc.rpm 7ae49a988c81a450cabc7f2ca6d24a76 6.2/sparc/mgetty-sendfax-1.1.22-1.6.x.sparc.rpm b903bc9f9531ed015248e7e000f58884 6.2/sparc/mgetty-viewfax-1.1.22-1.6.x.sparc.rpm 985ee71161bb9bb1c73325115e0150f3 6.2/sparc/mgetty-voice-1.1.22-1.6.x.sparc.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: You can verify each package with the following command: rpm --checksig 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 8. References: Thanks also go to Stan Bubrouski, Gert Doering, and This email address is being protected from spambots. You need JavaScript enabled to view it.. Copyright(c) 2000 Red Hat, Inc. `. Recent patches for mgetty have been launched to mitigate a critical security vulnerability in Red Hat Linux that allows for the unapproved removal of files.. Red Hat Linux, mgetty update, file threat. . Severity: Critical. LinuxSecurity.com Team

Sep 11, 2000 •Critical Red Hat