Secunia Security Advisory - A vulnerability has been reported in ISC DHCP, which can be exploited by malicious people to cause a DoS (Denial of Service).
57322eff37313063be500460379be619eb4ffc2e21eacb6be5893830dc1bda3d
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TITLE:
ISC DHCP DHCPv6 Dynamic DNS Lease Status Updating Denial of Service
Vulnerability
SECUNIA ADVISORY ID:
SA47555
VERIFY ADVISORY:
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http://secunia.com/advisories/47555/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47555
RELEASE DATE:
2012-01-13
DISCUSS ADVISORY:
http://secunia.com/advisories/47555/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/47555/
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DESCRIPTION:
A vulnerability has been reported in ISC DHCP, which can be exploited
by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to a NULL pointer dereference error
within the handling of the DHCPv6 lease structure when updating
Dynamic DNS lease status, which can be exploited to cause a crash by
sending specially crafted DHCP packets.
Successful exploitation requires that DHCPv6 and Dynamic DNS are
used.
The vulnerability is reported in versions 4.2.2, 4.2.3, and 4.2.3-P1.
SOLUTION:
Update to version 4.2.3-P2.
PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.
ORIGINAL ADVISORY:
https://www.isc.org/software/dhcp/advisories/cve-2011-4868
https://deepthought.isc.org/article/AA-00595
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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