Out-of-bounds read in PowerDNS Recursor - CVE-2020-10030

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Main Vulnerability Database Vulnerabilities #VU28143

Out-of-bounds read in PowerDNS Recursor - CVE-2020-10030

Published: May 20, 2020


Vulnerability identifier: #VU28143
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-10030
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing a hostname via the gethostname()  function. A local user with ability to change system hostname can trigger out-of-bounds read error and read contents of memory on the system.


Affected software

PowerDNS Recursor
pdns-recursor (Alpine package)
pdns-recursor
Fedora
SUSE Linux
Opensuse
SUSE Package Hub for SUSE Linux Enterprise

How to mitigate CVE-2020-10030

Install update from vendor's website.

PowerDNS Recursor - addressed in versions 4.1.16, 4.2.2, 4.3.1
pdns-recursor (Alpine package) - update to 4.1.16-r0
pdns-recursor - addressed in versions 4.1.16-1.el7, 4.2.2-1.el8, 4.2.2-1.fc31, 4.3.1-1.fc32

External References

Related Security Bulletins