Out-of-bounds Read Affecting powerdns package, versions [4.1.0,]


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.58% (79th percentile)

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  • Snyk IDSNYK-UNMANAGED-POWERDNS-2371669
  • published26 Jan 2022
  • disclosed19 May 2020
  • creditUnknown

Introduced: 19 May 2020

CVE-2020-10030  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for powerdns.

Overview

Affected versions of this package are vulnerable to Out-of-bounds Read. 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.

References

CVSS Scores

version 3.1