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Linux Kernel IPv6 Type 0 Route Headers and RTA_MAX Denial of Service
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Secunia Advisory:
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SA25068
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Release Date:
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2007-04-30
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Last Update:
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2007-07-27
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Popularity:
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8,553 views
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Critical:
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Moderately 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-2007-2172
CVE-2007-2242
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Description:
A vulnerability and a security issue have been reported in the Linux Kernel, which can be exploited by malicious people to cause a DoS (Denial of Service).
1) An error exists within the processing of packets with IPv6 type 0 route headers. This can be exploited to cause a DoS due to high network traffic by sending specially crafted IPv6 packets to vulnerable systems.
2) 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.
Solution:
Update to version 2.6.21.
Provided and/or discovered by:
1) Philippe Biondi and Arnaud Ebalard
2) Thomas Graf
Changelog:
2007-05-04: Updated "Description" and "Solution" section. Added vulnerability #2.
2007-07-27: Updated credits.
Original Advisory:
Linux:
1) http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21
2) http://kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.21-rc6
http://www.secdev.org/conf/IPv6_RH_security-csw07.pdf
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