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Linux Kernel RTA_MAX Security Issue and Seed Refeed Weakness
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Secunia Advisory:
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SA26244
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Release Date:
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2007-07-27
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Popularity:
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8,223 views
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Critical:
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Less critical
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Impact:
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Brute force
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 2.4.x
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| CVE reference: | CVE-2007-2172
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Description:
A security issue and a weakness have been reported in the Linux Kernel, which potentially can be exploited by malicious people to cause a DoS (Denial of Service) or bypass certain security restrictions.
1) A boundary error due to the use of RTA_MAX instead of RTN_MAX in dn_fib_props[] within dn_fib.c and in fib_props[] within fib_semantics.c can potentially be exploited to cause a DoS.
2) The "xfer_secondary_pool()" function in drivers/char/random.c uses the wrong data to refeed seeds into the random number generator. This may weaken the security of applications relying on the random number generator.
Note: This also fixes a problem introduced by a previous smbfs security patch.
Solution:
Update to version 2.4.35.
Provided and/or discovered by:
1) PaX Team
2) Thomas Graf
Original Advisory:
http://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.35
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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