CVE Vulnerability

CVE-2020-10030

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 '' 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 '' termination.) Under some conditions, this issue can lead to the writing of one '' byte out-of-bounds on the stack, causing a denial of service or possibly arbitrary code execution.

6.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-03.html Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
Configurations

Configuration 1

cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
Information

Published : 2020-05-19 04:15

Updated : 2020-06-14 07:15

NVD link : CVE-2020-10030

Mitre link : CVE-2020-10030

Products Affected
No products.
CWE
CWE-125

Out-of-bounds Read