PT-2019-6143 · Nlnet+8 · Unbound+8
Published
2019-12-11
·
Updated
2024-08-05
·
CVE-2019-25040
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Unbound versions prior to 1.9.5
Description
The issue is related to the function
dname pkt copy in the Unbound DNS server, which can lead to an infinite loop when processing a compressed name. This could potentially allow a remote attacker to cause a denial of service. However, the vendor disputes that this is a vulnerability, stating that although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited.Recommendations
For Unbound versions prior to 1.9.5, update to version 1.9.5 or later to resolve the issue. As a temporary workaround, consider restricting access to the
dname pkt copy function to minimize the risk of exploitation.Fix
Infinite Loop
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Centos
Linuxmint
Red Hat
Rocky Linux
Suse
Ubuntu
Unbound