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Linux Kernel Multiple Vulnerabilities
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Secunia Advisory:
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SA25163
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Release Date:
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2007-05-08
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Last Update:
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2007-07-09
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Critical:
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Less critical
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Impact:
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Exposure of sensitive information
DoS
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Where:
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Local system
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Solution Status:
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Vendor Workaround
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| OS: | Linux Kernel 2.6.x
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| | CVE reference: | CVE-2007-2480 (Secunia mirror)
CVE-2007-2525 (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 cause a DoS (Denial of Service) or disclose potentially sensitive information.
1) A memory leak exists when releasing PPPoE sockets after they are connected, but before the "PPPIOCGCHAN" ioctl is called. This can be exploited to cause a DoS due to memory exhaustion.
2) An error within the "_udp_lib_get_port()" function in net/ipv4/udp.c can be exploited to intercept traffic by binding to a port using a local address if a wildcard bind exists with a local address to that port.
The vulnerabilities are reported in versions prior to 2.6.21-git8. Other versions may also be affected.
Solution:
Update to version 2.6.21-git8. Vulnerability #1 is also fixed in version 2.6.22.
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-05-10: Added CVE references. Added vulnerability #2.
2007-07-09: Updated "Solution" section.
Original Advisory:
http://kernel.org/pub/linux/kernel/v2.6/snapshots/patch-2.6.21-git8.log
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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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