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Vulnerability Assessment & Network Security Forums |
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If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery. Home >> Browse Vulnerability Assessment Database >> Debian Local Security Checks >> [DSA423] DSA-423-1 linux-kernel-2.4.17-ia64 Vulnerability Assessment Details
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[DSA423] DSA-423-1 linux-kernel-2.4.17-ia64 |
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DSA-423-1 linux-kernel-2.4.17-ia64 Detailed Explanation for this Vulnerability Assessment The IA-64 maintainers fixed several security related bugs in the Linux kernel 2.4.17 used for the IA-64 architecture, mostly by backporting fixes from 2.4.18. The corrections are listed below with the identification from the Common Vulnerabilities and Exposures (CVE) project: Multiple ethernet network interface card (NIC) device drivers do not pad frames with null bytes, which permits remote attackers to obtain information from previous packets or kernel memory by using malformed packets, as demonstrated by Etherleak. Linux kernel 2.4.10 through 2.4.21-pre4 does not properly handle the O_DIRECT feature, which permits local attackers with write rights to read portions of previously deleted files, or cause file system corruption. The kernel module loader in Linux kernel 2.2.x before 2.2.25, and 2.4.x before 2.4.21, permits local users to gain root rights by using ptrace to attach to a child process which is spawned by the kernel. The virtual file /proc/tty/driver/serial in Linux 2.4.x reveals the exact number of characters used in serial links, which could permit local users to obtain potentially sensitive information such as the length of passwords. A race condition in the way env_start and env_end pointers are initialized in the execve system call and used in fs/proc/base.c on Linux 2.4 permits local users to cause a denial of service (crash). The execve system call in Linux 2.4.x records the file descriptor of the executable process in the file table of the calling process, which permits local users to gain read access to restricted file descriptors. The /proc filesystem in Linux permits local users to obtain sensitive information by opening various entries in /proc/self before executing a setuid program, which causes the program to fail to change the ownership and permissions of those entries. The STP protocol, as enabled in Linux 2.4.x, does not provide sufficient security by design, which permits attackers to modify the bridge topology. The STP protocol implementation in Linux 2.4.x does not properly verify certain lengths, which could permit attackers to cause a denial of service. Linux 2.4.x permits remote attackers to spoof the bridge Forwarding table via forged packets whose source addresses are the same as the target. An integer overflow in brk system call (do_brk function) for Linux kernel 2.4.22 and earlier permits local users to gain root rights. The mremap system call (do_mremap) in Linux kernel 2.4 and 2.6 does not properly perform boundary checks, which permits local users to cause a denial of service and possibly gain rights by causing a remapping of a virtual memory area (VMA) to create a zero length VMA. For the stable distribution (woody) this problem has been fixed in version kernel-image-2.4.17-ia64 for the ia64 architecture. Other architectures are already or will be fixed separately. For the unstable distribution (sid) this problem will b [...] Solution : http://www.debian.org/security/2004/dsa-423 Network Security Threat Level: High Networks Security ID: 10330, 6535, 6763, 7112, 8002, 8042, 8233 Vulnerability Assessment Copyright: This script is (C) 2005 Michel Arboi |
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