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lighttpd OpenSSL Error Queue Denial of Service Vulnerability
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Secunia Advisory:
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SA29544
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Release Date:
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2008-04-02
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Last Update:
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2008-10-03
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Popularity:
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3,512 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: | lighttpd 1.x
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| CVE reference: | CVE-2008-1531
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Description:
A vulnerability has been reported in lighttpd, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to lighttpd not properly clearing the OpenSSL error queue. This can be exploited to close concurrent SSL connections of lighttpd by terminating one SSL connection.
The vulnerability is reported in version 1.4.19. Other versions may also be affected.
Solution:
Update to version 1.4.20.
Provided and/or discovered by:
Discussed in the lighttpd bug #285. Additional research provided by marton.illes.
http://trac.lighttpd.net/trac/ticket/285
Changelog:
2008-10-03: Updated "Solution" section. Added link to the vendor.
Original Advisory:
http://trac.lighttpd.net/trac/ticket/285
http://www.lighttpd.net/security/lighttpd_sa_2008_04.txt
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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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