SuSE Security Announcement: libmcrypt (SuSE-SA:2003:0010)

-----BEGIN PGP SIGNED MESSAGE----- ______________________________________________________________________________ SuSE Security Announcement Package: libmcrypt Announcement-ID: SuSE-SA:2003:0010 Date: Wednesday, Feb. 26th 2003 11:20 MET Affected products: 7.1, 7.2, 7.3, 8.0, 8.1 SuSE eMail Server 3.1 SuSE eMail Server III SuSE Linux Connectivity Server SuSE Linux Enterprise Server 7 SuSE Linux Enterprise Server 8 SuSE Linux Office Server Vulnerability Type: local privilege escalation remote denial-of-service Severity (1-10): 3 SuSE default package: no Cross References: CAN-2003-0031 CAN-2003-0032 Content of this advisory: 1) security vulnerability resolved: buffer overflow problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds: - openssl - vnc - w3m 3) standard appendix (further information) ______________________________________________________________________________ 1) problem description, brief discussion, solution, upgrade information Libmcrypt is a data encryption library that is able to load crypto- modules at run-time by using libltdl. Versions of libmcrypt prior to 2.5.5 include several buffer overflows that can be triggered by passing very long input to the mcrypt_* functions. The way libmcrypt handles dynamic crypto-modules via libltdl leads to memory-leaks that can cause a Denial-of-Service condition. This Problem can just be solved by linking modules static. This security update does not solve the memory-leak problem to avoid compatibility problems. Future releases of libmcrypt will be linked statically. To add the new library to the shared library cache you have to run ldconfig(8) as root. Additionally every program that is linked with libmcrypt needs to be restarted. ldd(1) can be used to find out which libraries are used by a program. Another way to determine which process uses a shared library that had been deleted is: lsof -n 2>/dev/null | grep RPMDELETE | cut -d " " -f 1 | sort | uniq There is no temporary fix known. Please install the new packages from our FTP servers. Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement. Then, install the package using the command "rpm -Fhv file.rpm" to apply the update. Our maintenance customers are being notified individually. The packages are being offered to install from the maintenance web. Intel i386 Platform: SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/libmcrypt-2.5.2-48.i586.rpm 6dc3127a069545b9cb00cafd9897021f patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/libmcrypt-2.5.2-48.i586.patch.rpm 3b88d2a7f1bf409ec6cdee4702c8dc40 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/libmcrypt-2.5.2-48.src.rpm 8feed7301cb26aaa27084baea4a1677e SuSE-8.1: ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/libmcrypt-devel-2.5.2-48.i586.rpm 52bdf4a54df9fc698971fc1223b73d3d patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/libmcrypt-devel-2.5.2-48.i586.patch.rpm 5ecc44d5b4d6f35a4f57db1d7092575e source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/src/libmcrypt-2.5.2-48.src.rpm 8feed7301cb26aaa27084baea4a1677e SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec2/libmcrypt-2.4.20-114.i386.rpm 45997d80e97ce180a14b692b1f63b34b patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/sec2/libmcrypt-2.4.20-114.i386.patch.rpm 5ee228e095fbb3f53027a8a902978975 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/libmcrypt-2.4.20-114.src.rpm 6c189dcf7bcbffa7f271cdeb9065e212 SuSE-8.0: ftp://ftp.suse.com/pub/suse/i386/update/8.0/d4/libmcrypt-devel-2.4.20-114.i386.rpm 36b45ac7281a3dd2ba94794e26012180 patch rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/d4/libmcrypt-devel-2.4.20-114.i386.patch.rpm 21ad28cb8dad5e418f0185b53470502c source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/8.0/zq1/libmcrypt-2.4.20-114.src.rpm 6c189dcf7bcbffa7f271cdeb9065e212 SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec2/libmcrypt-2.4.15-98.i386.rpm f38972e593b79b8e22d5db86d9f75083 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/libmcrypt-2.4.15-98.src.rpm 8390dbcef0b58b3cca5141254f3af8ea SuSE-7.3: ftp://ftp.suse.com/pub/suse/i386/update/7.3/sec2/libmcrypt-devel-2.4.15-98.i386.rpm 6c5df7c177d88509aa10868142262868 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.3/zq1/libmcrypt-2.4.15-98.src.rpm 8390dbcef0b58b3cca5141254f3af8ea SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec2/libmcrypt-2.4.10-59.i386.rpm 5ff561010a642a26f92b1a491df6317c source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/libmcrypt-2.4.10-59.src.rpm 5430bf5ca7f79c16248024cbd6eb735a SuSE-7.2: ftp://ftp.suse.com/pub/suse/i386/update/7.2/sec2/libmcrypt-devel-2.4.10-59.i386.rpm 7afa785605e65106a3a250bd166ca2ef source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.2/zq1/libmcrypt-2.4.10-59.src.rpm 5430bf5ca7f79c16248024cbd6eb735a SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/sec2/libmcrypt-2.4.7-19.i386.rpm 4208d6905aa7c7dd13de30aa945f1693 source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/libmcrypt-2.4.7-19.src.rpm d6c0a61d874869ee3927af3b58335ff4 SuSE-7.1: ftp://ftp.suse.com/pub/suse/i386/update/7.1/sec2/libmcrypt-devel-2.4.7-19.i386.rpm 03028dbcf99e6fe167a30cd9b2e6da0f source rpm(s): ftp://ftp.suse.com/pub/suse/i386/update/7.1/zq1/libmcrypt-2.4.7-19.src.rpm d6c0a61d874869ee3927af3b58335ff4 Sparc Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec2/libmcrypt-2.4.15-53.sparc.rpm ae638ffb875f53df64325e8e0a148807 source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/libmcrypt-2.4.15-53.src.rpm c6bdd14b370e0ca912e8ca7615580df0 SuSE-7.3: ftp://ftp.suse.com/pub/suse/sparc/update/7.3/sec2/libmcrypt-devel-2.4.15-53.sparc.rpm 846455cc24b212f7b7287332cababc06 source rpm(s): ftp://ftp.suse.com/pub/suse/sparc/update/7.3/zq1/libmcrypt-2.4.15-53.src.rpm c6bdd14b370e0ca912e8ca7615580df0 AXP Alpha Platform: SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/sec2/libmcrypt-2.4.7-26.alpha.rpm 3789bb0a9411d85ec4514490f342a70f source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/libmcrypt-2.4.7-26.src.rpm c8dd2a18ccb249ed384df14359ba094e SuSE-7.1: ftp://ftp.suse.com/pub/suse/axp/update/7.1/sec2/libmcrypt-devel-2.4.7-26.alpha.rpm fa61fea31359365d07ccf45a56b1ca80 source rpm(s): ftp://ftp.suse.com/pub/suse/axp/update/7.1/zq1/libmcrypt-2.4.7-26.src.rpm c8dd2a18ccb249ed384df14359ba094e PPC Power PC Platform: SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec2/libmcrypt-2.4.15-89.ppc.rpm f75b386d8894c98fd0fa534d3560abbe source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/libmcrypt-2.4.15-89.src.rpm 5a3b3ce95652b81efb738b59aec1a7e4 SuSE-7.3: ftp://ftp.suse.com/pub/suse/ppc/update/7.3/sec2/libmcrypt-devel-2.4.15-89.ppc.rpm 6d3cea579e658b66ea62c97d4c58ce17 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.3/zq1/libmcrypt-2.4.15-89.src.rpm 5a3b3ce95652b81efb738b59aec1a7e4 SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/sec2/libmcrypt-2.4.7-23.ppc.rpm f097c1a2ce67b85cffb8f0076a6c09c3 source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/libmcrypt-2.4.7-23.src.rpm 9df0c47eb030905edeed919750aec9df SuSE-7.1: ftp://ftp.suse.com/pub/suse/ppc/update/7.1/sec2/libmcrypt-devel-2.4.7-23.ppc.rpm dc79a537365aae51c27d60dabb2615bf source rpm(s): ftp://ftp.suse.com/pub/suse/ppc/update/7.1/zq1/libmcrypt-2.4.7-23.src.rpm 9df0c47eb030905edeed919750aec9df ______________________________________________________________________________ 2) Pending vulnerabilities in SuSE Distributions and Workarounds: - OpenSSL Update packages for the recently found weakness in the openssl package are available on our ftp servers. An announcement concerning this issue follows this announcement. - VNC VNC (Virtual Network Computing) uses a weak cookie generation process which can be exploited by an attacker to bypass authentication. New packages are currently being tested and will be available on our FTP servers soon. - w3m The textbased web-browser w3m does not properly escape HTML tags. A malicious HTML page or img alt attribute may lead to information leakage. New packages will be available soon. ______________________________________________________________________________ 3) standard appendix: authenticity verification, additional information - Package authenticity verification: SuSE update packages are available on many mirror ftp servers all over the world. While this service is being considered valuable and important to the free and open source software community, many users wish to be sure about the origin of the package and its content before installing the package. There are two verification methods that can be used independently from each other to prove the authenticity of a downloaded file or rpm package: 1) md5sums as provided in the (cryptographically signed) announcement. 2) using the internal gpg signatures of the rpm package. 1) execute the command md5sum after you downloaded the file from a SuSE ftp server or its mirrors. Then, compare the resulting md5sum with the one that is listed in the announcement. Since the announcement containing the checksums is cryptographically signed (usually using the key security@suse.de), the checksums show proof of the authenticity of the package. We disrecommend to subscribe to security lists which cause the email message containing the announcement to be modified so that the signature does not match after transport through the mailing list software. Downsides: You must be able to verify the authenticity of the announcement in the first place. If RPM packages are being rebuilt and a new version of a package is published on the ftp server, all md5 sums for the files are useless. 2) rpm package signatures provide an easy way to verify the authenticity of an rpm package. Use the command rpm -v --checksig to verify the signature of the package, where is the filename of the rpm package that you have downloaded. Of course, package authenticity verification can only target an un-installed rpm package file. Prerequisites: a) gpg is installed b) The package is signed using a certain key. The public part of this key must be installed by the gpg program in the directory ~/.gnupg/ under the user's home directory who performs the signature verification (usually root). You can import the key that is used by SuSE in rpm packages for SuSE Linux by saving this announcement to a file ("announcement.txt") and running the command (do "su -" to be root): gpg --batch; gpg < announcement.txt | gpg --import SuSE Linux distributions version 7.1 and thereafter install the key "build@suse.de" upon installation or upgrade, provided that the package gpg is installed. The file containing the public key is placed at the top-level directory of the first CD (pubring.gpg) and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de . - SuSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - general/linux/SuSE security discussion. All SuSE security announcements are sent to this list. To subscribe, send an email to . suse-security-announce@suse.com - SuSE's announce-only mailing list. Only SuSE's security announcements are sent to this list. To subscribe, send an email to . For general information or the frequently asked questions (faq) send mail to: or respectively. ===================================================================== SuSE's security contact is or . The public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, it is desired that the clear-text signature shows proof of the authenticity of the text. SuSE Linux AG makes no warranties of any kind whatsoever with respect to the information contained in this security advisory. Type Bits/KeyID Date User ID pub 2048R/3D25D3D9 1999-03-06 SuSE Security Team pub 1024D/9C800ACA 2000-10-19 SuSE Package Signing Key - -----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.0.6 (GNU/Linux) Comment: For info see http://www.gnupg.org mQGiBDnu9IERBACT8Y35+2vv4MGVKiLEMOl9GdST6MCkYS3yEKeueNWc+z/0Kvff 4JctBsgs47tjmiI9sl0eHjm3gTR8rItXMN6sJEUHWzDP+Y0PFPboMvKx0FXl/A0d M+HFrruCgBlWt6FA+okRySQiliuI5phwqkXefl9AhkwR8xocQSVCFxcwvwCglVcO QliHu8jwRQHxlRE0tkwQQI0D+wfQwKdvhDplxHJ5nf7U8c/yE/vdvpN6lF0tmFrK XBUX+K7u4ifrZlQvj/81M4INjtXreqDiJtr99Rs6xa0ScZqITuZC4CWxJa9GynBE D3+D2t1V/f8l0smsuYoFOF7Ib49IkTdbtwAThlZp8bEhELBeGaPdNCcmfZ66rKUd G5sRA/9ovnc1krSQF2+sqB9/o7w5/q2qiyzwOSTnkjtBUVKn4zLUOf6aeBAoV6NM CC3Kj9aZHfA+ND0ehPaVGJgjaVNFhPi4x0e7BULdvgOoAqajLfvkURHAeSsxXIoE myW/xC1sBbDkDUIBSx5oej73XCZgnj/inphRqGpsb+1nKFvF+rQoU3VTRSBQYWNr YWdlIFNpZ25pbmcgS2V5IDxidWlsZEBzdXNlLmRlPohcBBMRAgAcBQI57vSBBQkD wmcABAsKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyl8sAJ98BgD40zw0GHJHIf6d NfnwI2PAsgCgjH1+PnYEl7TFjtZsqhezX7vZvYCIRgQQEQIABgUCOnBeUgAKCRCe QOMQAAqrpNzOAKCL512FZvv4VZx94TpbA9lxyoAejACeOO1HIbActAevk5MUBhNe LZa/qM2JARUDBRA6cGBvd7LmAD0l09kBATWnB/9An5vfiUUE1VQnt+T/EYklES3t XXaJJp9pHMa4fzFa8jPVtv5UBHGee3XoUNDVwM2OgSEISZxbzdXGnqIlcT08TzBU D9i579uifklLsnr35SJDZ6ram51/CWOnnaVhUzneOA9gTPSr+/fT3WeVnwJiQCQ3 0kNLWVXWATMnsnT486eAOlT6UNBPYQLpUprF5Yryk23pQUPAgJENDEqeU6iIO9Ot 1ZPtB0lniw+/xCi13D360o1tZDYOp0hHHJN3D3EN8C1yPqZd5CvvznYvB6bWBIpW cRgdn2DUVMmpU661jwqGlRz1F84JG/xe4jGuzgpJt9IXSzyohEJB6XG5+D0BiF0E ExECAB0FAjxqqTQFCQoAgrMFCwcKAwQDFQMCAxYCAQIXgAAKCRCoTtronIAKyp1f AJ9dR7saz2KPNwD3U+fy/0BDKXrYGACfbJ8fQcJqCBQxeHvt9yMPDVq0B0W5Ag0E Oe70khAIAISR0E3ozF/la+oNaRwxHLrCet30NgnxRROYhPaJB/Tu1FQokn2/Qld/ HZnh3TwhBIw1FqrhWBJ7491iAjLR9uPbdWJrn+A7t8kSkPaF3Z/6kyc5a8fas44h t5h+6HMBzoFCMAq2aBHQRFRNp9Mz1ZvoXXcI1lk1l8OqcUM/ovXbDfPcXsUVeTPT tGzcAi2jVl9hl3iwJKkyv/RLmcusdsi8YunbvWGFAF5GaagYQo7YlF6UaBQnYJTM 523AMgpPQtsKm9o/w9WdgXkgWhgkhZEeqUS3m5xNey1nLu9iMvq9M/iXnGz4sg6Q 2Y+GqZ+yAvNWjRRou3zSE7Bzg28MI4sAAwYH/2D71Xc5HPDgu87WnBFgmp8MpSr8 QnSs0wwPg3xEullGEocolSb2c0ctuSyeVnCttJMzkukL9TqyF4s/6XRstWirSWaw JxRLKH6Zjo/FaKsshYKf8gBkAaddvpl3pO0gmUYbqmpQ3xDEYlhCeieXS5MkockQ 1sj2xYdB1xO0ExzfiCiscUKjUFy+mdzUsUutafuZ+gbHog1CN/ccZCkxcBa5IFCH ORrNjq9pYWlrxsEn6ApsG7JJbM2besW1PkdEoxak74z1senh36m5jQvVjA3U4xq1 wwylxadmmJaJHzeiLfb7G1ZRjZTsB7fyYxqDzMVul6o9BSwO/1XsIAnV1uuITAQY EQIADAUCOe70kgUJA8JnAAAKCRCoTtronIAKyksiAJsFB3/77SkH3JlYOGrEe1Ol 0JdGwACeKTttgeVPFB+iGJdiwQlxasOfuXyITAQYEQIADAUCPGqpWQUJCgCCxwAK CRCoTtronIAKyofBAKCSZM2UFyta/fe9WgITK9I5hbxxtQCfX+0ar2CZmSknn3co SPihn1+OBNyZAQ0DNuEtBAAAAQgAoCRcd7SVZEFcumffyEwfLTcXQjhKzOahzxpo omuF+HIyU4AGq+SU8sTZ/1SsjhdzzrSAfv1lETACA+3SmLr5KV40Us1w0UC64cwt A46xowVq1vMlH2Lib+V/qr3b1hE67nMHjysECVx9Ob4gFuKNoR2eqnAaJvjnAT8J /LoUC20EdCHUqn6v+M9t/WZgC+WNR8cq69uDy3YQhDP/nIan6fm2uf2kSV9A7ZxE GrwsWl/WX5Q/sQqMWaU6r4az98X3z90/cN+eJJ3vwtA+rm+nxEvyev+jaLuOQBDf ebh/XA4FZ35xmi+spdiVeJH4F/ubaGlmj7+wDOF3suYAPSXT2QAFEbQlU3VTRSBT ZWN1cml0eSBUZWFtIDxzZWN1cml0eUBzdXNlLmRlPokBFQMFEDbhLUfkWLKHsco8 RQEBVw4H/1vIdiOLX/7hdzYaG9crQVIk3QwaB5eBbjvLEMvuCZHiY2COUg5QdmPQ 8SlWNZ6k4nu1BLcv2g/pymPUWP9fG4tuSnlUJDrWGm3nhyhAC9iudP2u1YQY37Gb B6NPVaZiYMnEb4QYFcqv5c/r2ghSXUTYk7etd6SW6WCOpEqizhx1cqDKNZnsI/1X 11pFcO2N7rc6byDBJ1T+cK+F1Ehan9XBt/shryJmv04nli5CXQMEbiqYYMOu8iaA 8AWRgXPCWqhyGhcVD3LRhUJXjUOdH4ZiHCXaoF3zVPxpeGKEQY8iBrDeDyB3wHmj qY9WCX6cmogGQRgYG6yJqDalLqrDOdmJARUDBRA24S0Ed7LmAD0l09kBAW04B/4p WH3f1vQn3i6/+SmDjGzUu2GWGq6Fsdwo2hVM2ym6CILeow/K9JfhdwGvY8LRxWRL hn09j2IJ9P7H1Yz3qDf10AX6V7YILHtchKT1dcngCkTLmDgC4rs1iAAl3f089sRG BafGPGKv2DQjHfR1LfRtbf0P7c09Tkej1MP8HtQMW9hPkBYeXcwbCjdrVGFOzqx+ AvvJDdT6a+oyRMTFlvmZ83UV5pgoyimgjhWnM1V4bFBYjPrtWMkdXJSUXbR6Q7Pi RZWCzGRzwbaxqpl3rK/YTCphOLwEMB27B4/fcqtBzgoMOiaZA0M5fFoo54KgRIh0 zinsSx2OrWgvSiLEXXYKiEYEEBECAAYFAjseYcMACgkQnkDjEAAKq6ROVACgjhDM /3KM+iFjs5QXsnd4oFPOnbkAnjYGa1J3em+bmV2aiCdYXdOuGn4ZiQCVAwUQN7c7 whaQN/7O/JIVAQEB+QP/cYblSAmPXxSFiaHWB+MiUNw8B6ozBLK0QcMQ2YcL6+Vl D+nSZP20+Ja2nfiKjnibCv5ss83yXoHkYk2Rsa8foz6Y7tHwuPiccvqnIC/c9Cvz dbIsdxpfsi0qWPfvX/jLMpXqqnPjdIZErgxpwujas1n9016PuXA8K3MJwVjCqSKI RgQQEQIABgUCOhpCpAAKCRDHUqoysN/3gCt7AJ9adNQMbmA1iSYcbhtgvx9ByLPI DgCfZ5Wj+f7cnYpFZI6GkAyyczG09sE= =LRKC - -----END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBPlyhyHey5gA9JdPZAQGrbQgAkRW6WfHLUlML05hHQvyU7BKErKmrUpIL reFsEgB/5dBq4TkagZ9lDmHR9PUOs1qUOzDdcIsKG6JWduXe+9s1owzkSOK5MsKQ xl7+OqNS/8aP/+uhN1DxUCagZXV01tBh7IDuKlnJIClawD6cFt3UDtFzIOoZ13XJ 1pGgDZ3OTJ7VJ9JY64j8jZ9qxHoxoaOlgFVCsXeNfzpeNAtMzQKfaHLIYkxXn2qf Rtb9aqx8rPpD7PRJQrlOPNfln1N9JaXUZZ76JrCOt3m6PaPxAEvoYt4AWQy3Oe55 uKMnCnOMpQg1j/JLyXq3y58FuThdeZDWIrOwQwDlf22YKsNv+zbLJQ== =JMk6 -----END PGP SIGNATURE----- Bye, Thomas -- Thomas Biege SuSE Linux AG,Deutschherrnstr. 15-19,90429 Nuernberg Function: Security Support & Auditing "lynx -source http://www.suse.de/~thomas/contact/thomas.asc | gpg --import" Key fingerprint = 7254 B15D B3C4 943F 485E 0BBD 8ECC D7CB C200 A213 -- Swimming through the Void We hear the Words We lose Ourselves But we find it All -- Serj Tankian (Arials Lyrics)