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Linux-Mandrake Security Update Advisory: bind updateJan 29, 2001, 23:13 (0 Talkback[s])Date: Mon, 29 Jan 2001 10:39:15 -0700
Linux-Mandrake Security Update Advisory
Package name: bind Date: January 29th, 2001 Advisory ID: MDKSA-2001:017 Affected versions: 6.0, 6.1, 7.0, 7.1, 7.2, Corporate Server 1.0.1 Problem Description: Four problems exists in all versions of ISC BIND 4.9.x prior to 4.9.8 and 8.2.x prior to 8.2.3 (9.x is not affected). Version 8.2.x contains a buffer overflow in transaction signature (TSIG) handling code that can be exploited by an attacker to gain unauthorized privileged access to the system, allowing execution of arbitrary code. BIND 4 contains both a buffer overflow in the nslookupComplain() function, as well as an input validation error in the same function. These two flaws in BIND 4 can result in a Denial of Service or the execution of arbitrary code if successfully exploited. Finally, both BIND 4 and BIND 8 suffer from an information leak in the query processing code that allows a remote attacker to access the program stack, possibly exposing program and/or environment variables. This flaw is triggered by sending a specially formatted query to vulnerable BIND servers. Linux-Mandrake ships with ISC BIND 8 and is therefore vulnerable to the first and final vulnerabilities previously mentioned. The first vulnerability is limited because any access gained exploiting it will result in restricted access due to the named server running as the user and group named, not as root. It is highly recommended that all Linux-Mandrake users upgrade BIND immediately to the latest 8.2.3 version that fixes these vulnerabilities. For more information, please read the CERT Advisory (CA-2001-02) at: http://www.cert.org/advisories/CA-2001-02.html Please verify the update prior to upgrading to ensure the
integrity of the downloaded package. You can do this with the
command: Linux-Mandrake 6.0: Linux-Mandrake 6.1: Linux-Mandrake 7.0: Linux-Mandrake 7.1: Linux-Mandrake 7.2: Corporate Server 1.0.1: To upgrade automatically, use <<MandrakeUpdate>>. If you want to upgrade manually, download the updated package from one of our FTP server mirrors and uprade with "rpm -Uvh package_name". You can download the updates directly from: Or try one of the other mirrors listed at: http://www.linux-mandrake.com/en/ftp.php3. Updated packages are available in the "updates/[ver]/RPMS/" directory. For example, if you are looking for an updated RPM package for Linux-Mandrake 7.1, look for it in "updates/7.1/RPMS/". Updated source RPMs are available as well, but you generally do not need to download them. Please be aware that sometimes it takes the mirrors a few hours to update, so if you want an immediate upgrade, please use one of the two above-listed mirrors. You can view other security advisories for Linux-Mandrake at: http://www.linux-mandrake.com/en/security/ If you want to report vulnerabilities, please contact Linux-Mandrake has two security-related mailing list services that anyone can subscribe to: security-announce@linux-mandrake.com Linux-Mandrake's security announcements mailing list. Only announcements are sent to this list and it is read-only. security-discuss@linux-mandrake.com Linux-Mandrake's security discussion mailing list. This list is open to anyone to discuss Linux-Mandrake security specifically and Linux security in general. To subscribe to either list, send a message to sympa@linux-mandrake.com with "subscribe [listname]" in the body of the message. To remove yourself from either list, send a message to sympa@linux-mandrake.com with "unsubscribe [listname]" in the body of the message. To get more information on either list, send a message to sympa@linux-mandrake.com with "info [listname]" in the body of the message. Optionally, you can use the web interface to subscribe to or unsubscribe from either list: http://www.linux-mandrake.com/en/flists.php3#security
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