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SuSE alert SUSE-SR:2006:022 (heimdal, xsp)

From:  Marcus Meissner <meissner@suse.de>
To:  suse-security-announce@suse.com
Subject:  [suse-security-announce] SUSE Security Summary Report SUSE-SR:2006:022
Date:  Fri, 08 Sep 2006 16:34:53 +0200

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Summary Report Announcement ID: SUSE-SR:2006:022 Date: Fri, 08 Sep 2006 17:00:00 +0000 Cross-References: CVE-2006-2563, CVE-2006-2658, CVE-2006-3083 CVE-2006-3468, CVE-2006-3745, CVE-2006-4020 CVE-2006-4093 Content of this advisory: 1) Solved Security Vulnerabilities: - heimdal potential setuid return value checking problems - xsp directory traversal 2) Pending Vulnerabilities, Solutions, and Work-Arounds: - php4/php5 security update - kernel security update 3) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Solved Security Vulnerabilities To avoid flooding mailing lists with SUSE Security Announcements for minor issues, SUSE Security releases weekly summary reports for the low profile vulnerability fixes. The SUSE Security Summary Reports do not list md5 sums or download URLs like the SUSE Security Announcements that are released for more severe vulnerabilities. Fixed packages for the following incidents are already available on our FTP server and via the YaST Online Update. - heimdal potential setuid return value checking problems A potential security problem was fixed in the heimdal tools. Missing setuid return checking might be used by local users to escalate their privileges to root. This is similar to the MIT krb5 problem as tracked by the Mitre CVE ID CVE-2006-3083. - xsp directory traversal Insufficient path checks in the Mono/C# web server component 'xsp' allowed remote attackers to access arbitrary files via relative path names in the HTTP request. The affected code is only used by mod_mono. This issue has been assigned the Mitre CVE ID CVE-2006-2658 and affected Open Enterprise Server 1 and SUSE Linux 9.2 up to 10.1. ______________________________________________________________________________ 2) Pending Vulnerabilities, Solutions, and Work-Arounds - php4/php5 security update We are currently QA testing fixes for several security problems in PHP4 and PHP5. These include: - The CURL module lacked checks for control characters (CVE-2006-2563)) - str_repeat() contained an integer overflow. - ext/wddx contained a buffer overflow. - memory_limit() lacked checks for integer overflows. - A bug in sscanf() could potentially be exploited to execute arbitrary code (CVE-2006-4020) - Corrupt GIF images could crash php. We expect a release of the updates early next week. - kernel security update We are currently QA testing a kernel update fixing the following security problems: - CVE-2006-3745: A double userspace copy in a SCTP ioctl allows local attackers to overflow a buffer in the kernel, potentially allowing code execution and privilege escalation. - CVE-2006-4093: Local attackers were able to crash PowerPC systems with PPC970 processor using a not correctly disabled privileged instruction ("attn"). - CVE-2006-3468: Remote attackers able to access an NFS of a ext2 or ext3 filesystem can cause a denial of service (file system panic) via a crafted UDP packet with a V2 lookup procedure that specifies a bad file handle (inode number), which triggers an error and causes an exported directory to be remounted read-only. We hope to release the updates early next week. ______________________________________________________________________________ 3) Authenticity Verification and Additional Information - Announcement authenticity verification: SUSE security announcements are published via mailing lists and on Web sites. The authenticity and integrity of a SUSE security announcement is guaranteed by a cryptographic signature in each announcement. All SUSE security announcements are published with a valid signature. To verify the signature of the announcement, save it as text into a file and run the command gpg --verify <file> replacing <file> with the name of the file containing the announcement. The output for a valid signature looks like: gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team <security@suse.de>" where <DATE> is replaced by the date the document was signed. If the security team's key is not contained in your key ring, you can import it from the first installation CD. To import the key, use the command gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc - Package authenticity verification: SUSE update packages are available on many mirror FTP servers all over the world. While this service is considered valuable and important to the free and open source software community, the authenticity and integrity of a package needs to be verified to ensure that it has not been tampered with. The internal RPM package signatures provide an easy way to verify the authenticity of an RPM package. Use the command rpm -v --checksig <file.rpm> to verify the signature of the package, replacing <file.rpm> with the filename of the RPM package downloaded. The package is unmodified if it contains a valid signature from build@suse.de with the key ID 9C800ACA. This key is automatically imported into the RPM database (on RPMv4-based distributions) and the gpg key ring of 'root' during installation. You can also find it on the first installation CD and included at the end of this announcement. - SUSE runs two security mailing lists to which any interested party may subscribe: suse-security@suse.com - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to <suse-security-subscribe@suse.com>. 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 e-mail to <suse-security-announce-subscribe@suse.com>. For general information or the frequently asked questions (FAQ) send mail to <suse-security-info@suse.com> or <suse-security-faq@suse.com>. ===================================================================== SUSE's security contact is <security@suse.com> or <security@suse.de>. The <security@suse.de> 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, the clear text signature should show proof of the authenticity of the text. SUSE Linux Products GmbH provides no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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