Upstream information

CVE-2020-10030 at MITRE

Description

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.

SUSE information

Overall state of this security issue: Does not affect SUSE products

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 6.5
Vector AV:N/AC:L/Au:S/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database
Base Score 8.8
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector Network
Access Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1171553 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub for SUSE Linux Enterprise 12 SP1
  • pdns-recursor >= 4.1.16-19.1
  • pdns-recursor-debuginfo >= 4.1.12-lp151.3.3.1
  • pdns-recursor-debugsource >= 4.1.12-lp151.3.3.1
Patchnames:
openSUSE-2020-698
openSUSE Leap 15.1
  • pdns-recursor >= 4.1.12-lp151.3.3.1
  • pdns-recursor-debuginfo >= 4.1.12-lp151.3.3.1
  • pdns-recursor-debugsource >= 4.1.12-lp151.3.3.1
Patchnames:
openSUSE-2020-698