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Linux Kernel Multiple Denial of Service Vulnerabilities
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Secunia Advisory:
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SA16355
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Release Date:
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2005-08-09
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Last Update:
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2005-09-27
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Popularity:
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11,874 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Linux Kernel 2.6.x
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| | CVE reference: | CVE-2005-2098
CVE-2005-2099
CVE-2005-2457
CVE-2005-2458
CVE-2005-2459
CVE-2005-2802
CVE-2005-2872
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Description:
Some vulnerabilities have been reported in the Linux kernel, which can be exploited by malicious, local users and potentially malicious people to cause a DoS (Denial of Service).
1) An error within the handling of keyrings makes it possible to crash the kernel when destroying a keyring that wasn't properly instantiated. This can be exploited by attempting to add a keyring that doesn't have an empty payload.
2) An error within the error handling path for the "KEYCTL_JOIN_SESSION_KEYRING" operation when attempting to join a key management session may cause the session management semaphore to not be released. This can be exploited by attempting to add a new session keyring.
3) Some errors in the in-kernel zlib routines can be exploited to cause a DoS via specially crafted input.
4) An error in the driver for compressed ISO file systems can be exploited to crash the kernel when e.g. a malicious CD-ROM with a specially crafted compressed ISO image is mounted.
5) A array type error in the "ipt_recent.c" netfilter module when calling "memset()" on the "last_pkts" array may cause the kernel to crash via certain attacks. e.g. SSH brute force. This only affects 64-bit platforms.
Solution:
Update to version 2.6.12.5.
http://kernel.org/
Provided and/or discovered by:
1-2) David Howells
4) Tim Yamin
5) Juergen Kreileder
Changelog:
2005-08-16: Updated "Solution" section. Added information about zlib vulnerabilities.
2005-08-19: Added information about additional vulnerability.
2005-09-07: Added information about additional vulnerability.
2005-09-27: Added CVE reference. Updated "Description" for #5, and added link to "Original Advisory".
Original Advisory:
Kernel.org:
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.12.5
Debian:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=322237
Juergen Kreileder:
http://blog.blackdown.de/2005/05/09/fixing-the-ipt_recent-netfilter-module/
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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10th Oct, 2008
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