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GEN:SID | 1:260 |
Message | DNS EXPLOIT named overflow ADMROCKS |
Summary | This event is generated by an attempted buffer overflow associated with improperly formatted DNS inverse queries. |
Impact | Severe. The DNS server can be compromised allowing the attacker access at the privilege level at which BIND runs. |
Detailed Information | Certain versions of BIND do no perform correct bounds checking when responding to an inverse query. A maliciously formatted inverse query can cause the DNS server to crash and allow remote access with the privileges of the user running BIND. Inverse queries are disabled by default; this attack can affect DNS servers that have been configured to enable them. |
Affected Systems | BIND 4.9 releases prior to 4.9.7 and BIND 8 releases prior to 8.1.2. |
Attack Scenarios | An attacker can launch this exploit to gain remote access to the DNS server. |
Ease of Attack | Simple. Code exists to exploit the buffer overflow. |
Corrective Action | Upgrade to a version of BIND that is not vulnerable to this attack. |
Additional References | CERT: http://www.cert.org/advisories/CA-1998-05.html |
Rule References | bugtraq: 788 cve: 1999-0833 url: www.cert.org/advisories/CA-1999-14.html |
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DID:838922
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