Unbound up to 1.4.10

Summaryinfo

A vulnerability, which was classified as critical, has been found in Unbound. The impacted element is an unknown function of the component Unbound. Performing a manipulation results in an unknown weakness. This vulnerability was named CVE-2012-1192. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Unbound. It has been classified as critical. This affects an unknown functionality of the component Unbound. This is going to have an impact on integrity, and availability. The summary by CVE is:

The resolver in Unbound before 1.4.11 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.

The weakness was presented 02/17/2012 (Website). It is possible to read the advisory at isc.org. This vulnerability is uniquely identified as CVE-2012-1192 since 02/17/2012. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 87869 (Unbound < 1.4.11 Cache Update Policy Deleted Domain Name Resolving Weakness), which helps to determine the existence of the flaw in a target environment. It is assigned to the family DNS and running in the context r.

Upgrading to version 1.1.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (87869) and SecurityFocus (BID 78263†). See VDB-60245, VDB-60244 and VDB-60242 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Unbound

Version

• 0.0
• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.7.1
• 0.7.2
• 0.8
• 0.9
• 0.10
• 0.11
• 1.0.0
• 1.0.1
• 1.0.2
• 1.1.0
• 1.1.1
• 1.2.0
• 1.2.1
• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.6
• 1.4.7
• 1.4.8
• 1.4.9
• 1.4.10

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

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CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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