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Asterisk SIP Channel Driver Dialog History Memory Exhaustion
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Secunia Advisory:
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SA26553
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Release Date:
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2007-08-22
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Popularity:
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7,242 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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| Software: | Asterisk 1.x
Asterisk Appliance Developer Kit 0.x
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| CVE reference: | CVE-2007-4455
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Description:
A vulnerability has been reported in Asterisk, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to the SIP Dialog History of SIP channel driver (chan_sip) recording all history items (88 bytes per item) in memory. This can be exploited to cause a DoS due to memory exhaustion by causing a high amount of logged items.
The vulnerability is reported in Asterisk 1.4.x prior to version 1.4.11. Asterisk Appliance Developer Kit 0.x.x prior to version 0.8.0 and s800i (Asterisk Appliance) 1.0.x prior to version 1.0.3 are also affected.
Solution:
Asterisk 1.4.x:
Update to version 1.4.11.
http://downloads.digium.com/pub/telephony/asterisk
Asterisk Appliance Developer Kit 0.x.x:
Update to version 0.8.0.
http://downloads.digium.com/pub/telephony/aadk
Provided and/or discovered by:
The vendor credits Jon Moldenauer.
Original Advisory:
http://downloads.digium.com/pub/asa/AST-2007-020.pdf
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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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