PowerDNS Recursor up to 4.3.0 gethostname out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

Summaryinfo

A vulnerability was found in PowerDNS Recursor up to 4.3.0. It has been declared as critical. Affected by this issue is the function gethostname. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2020-10030. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in PowerDNS Recursor up to 4.3.0 (Domain Name Software). It has been rated as critical. Affected by this issue is the function gethostname. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue has been found in PowerDNS Recursor 4.1.0 up to and including 4.3.0. It allows an attacker (with enough privileges to change the system's hostname) to cause disclosure of uninitialized memory content via a stack-based out-of-bounds read. It only occurs on systems where gethostname() does not have '\0' termination of the returned string if the hostname is larger than the supplied buffer. (Linux systems are not affected because the buffer is always large enough. OpenBSD systems are not affected because the returned hostname always has '\0' termination.) Under some conditions, this issue can lead to the writing of one '\0' byte out-of-bounds on the stack, causing a denial of service or possibly arbitrary code execution.

The weakness was published 05/19/2020 (Website). The advisory is shared for download at doc.powerdns.com. This vulnerability is handled as CVE-2020-10030 since 03/04/2020. The attack may be launched remotely. Required for exploitation is a simple authentication. There are known technical details, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entry is available at VDB-155423. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/04/2020 🔍
05/19/2020 +76 days 🔍
05/19/2020 +0 days 🔍
10/18/2020 +152 days 🔍

Sourcesinfo

Advisory: doc.powerdns.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-10030 (🔍)
GCVE (CVE): GCVE-0-2020-10030
GCVE (VulDB): GCVE-100-155420
See also: 🔍

Entryinfo

Created: 05/19/2020 21:00
Updated: 10/18/2020 17:45
Changes: 05/19/2020 21:00 (38), 05/19/2020 21:05 (18), 10/18/2020 17:45 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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