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TITLE:
nginx DNS Response Handling Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA46798

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46798/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46798

RELEASE DATE:
2011-11-17

DISCUSS ADVISORY:
http://secunia.com/advisories/46798/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/46798/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=46798

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A vulnerability has been reported in nginx, which can be exploited by
malicious people to potentially compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the
"ngx_resolver_copy()" function (ngx_resolver.c) when handling DNS
responses. This can be exploited to cause a heap-based buffer
overflow via a specially crafted DNS response.

Successful exploitation may allow execution of arbitrary code but
requires that the custom DNS resolver is enabled (disabled by
default).

The vulnerability is reported in versions prior to 1.0.10.

SOLUTION:
Update to version 1.0.10.

PROVIDED AND/OR DISCOVERED BY:
Ben Hawkes

ORIGINAL ADVISORY:
nginx:
http://nginx.org/en/CHANGES-1.0

Ben Hawkes:
http://www.openwall.com/lists/oss-security/2011/11/17/8

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
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