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Linux Kernel Multiple Vulnerabilities
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Secunia Advisory:
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SA16747
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Release Date:
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2005-09-09
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Last Update:
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2006-08-11
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Critical:
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Less critical
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Impact:
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Exposure of sensitive information
Privilege escalation
DoS
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| OS: | Linux Kernel 2.4.x
Linux Kernel 2.6.x
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| | CVE reference: | CVE-2005-2490 (Secunia mirror)
CVE-2005-2492 (Secunia mirror)
CVE-2005-3753 (Secunia mirror)
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Description:
Some vulnerabilities have been reported in the Linux kernel, which potentially can be exploited by malicious, local users to disclose certain sensitive information, cause a DoS (Denial of Service) and gain escalated privileges, or by malicious people to cause a DoS.
1) A boundary error in "sendmsg()" when copying 32bit "msg_control" contents from user-space to the kernel can be exploited to cause a buffer overflow. This may allow a malicious user to gain root privileges and execute arbitrary code with kernel privileges.
The vulnerability has been reported in version 2.4.21 and 2.6.9. Other versions may also be affected.
2) An error in the "raw_sendmsg()" function may allow a malicious user to read kernel memory contents and disclose certain information, or to manipulate certain hardware state to cause a DoS.
The vulnerability has been reported in the 2.6 kernel branch.
3) An error in performing boundary checks in the standard multi-block cipher processors can be exploited to cause a kernel panic in an IPSec environment when handling packets with a block size that is not multiple of "bsize".
The vulnerability has been reported in version 2.6.13. Prior versions may also be affected.
Solution:
Update to version 2.4.33 or 2.6.13.1.
http://kernel.org/
Provided and/or discovered by:
1-2) Alexander Viro
3) Matt LaPlante
Changelog:
2005-09-09: Added information about additional vulnerability.
2005-09-12: Added information about additional vulnerability. Updated solution.
2005-11-29: Added CVE reference.
2006-08-11: Updated "Solution" section.
Original Advisory:
Kernel.org:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.13.1
Red Hat:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=166248
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=166249
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=166830
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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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3. Linux Kernel Information Disclosure and Denial of Service
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4. Linux Kernel LDT Buffer Size Handling Vulnerability
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5. Linux Kernel Multiple Vulnerabilities
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6. Linux Kernel "pppol2tp_recvmsg()" Memory Corruption Vulnerability
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7. Linux Kernel ASN.1 BER Decoding Vulnerability
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8. Linux Kernel Denial of Service Vulnerabilities
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9. Linux Kernel Unspecified Vulnerability
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10. Linux Kernel Multiple Vulnerabilities
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