Home / vulnerabilities Secunia Security Advisory 44719
Posted on 27 May 2011
Source : packetstormsecurity.org Link
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TITLE:
ISC BIND Negative Caching RRSIG RRsets Denial of Service
Vulnerability
SECUNIA ADVISORY ID:
SA44719
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44719/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44719
RELEASE DATE:
2011-05-27
DISCUSS ADVISORY:
http://secunia.com/advisories/44719/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/44719/
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https://ca.secunia.com/?page=viewadvisory&vuln_id=44719
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DESCRIPTION:
A vulnerability has been reported in ISC BIND, which can be exploited
by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an assertion error within the
processing of negative responses containing large RRSIG RRsets, which
can be exploited to crash named.
Successful exploitation requires that the attacker can e.g. directly
query or trick an authorised client into querying the targeted
caching resolvers.
The vulnerability is reported in versions 9.4-ESV-R3 and later,
9.6-ESV-R2 and later, 9.6.3, 9.7.1 and later, and 9.8.0 and later.
SOLUTION:
Update to version 9.4-ESV-R4-P1 as soon as available or versions
9.6-ESV-R4-P1, 9.7.3-P1, and 9.8.0-P2.
PROVIDED AND/OR DISCOVERED BY:
The vendor credits Frank Kloeker and Michael Sinatra.
ORIGINAL ADVISORY:
https://www.isc.org/software/bind/advisories/cve-2011-1910
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/
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