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CVE-2019-25034

Published: 27 April 2021

** DISPUTED ** Unbound before 1.9.5 allows an integer overflow in sldns_str2wire_dname_buf_origin, leading to an out-of-bounds write. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited.

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
unbound
Launchpad, Ubuntu, Debian
impish Not vulnerable

groovy Not vulnerable
(1.11.0-1)
hirsute Not vulnerable

trusty Needed

upstream
Released (1.9.6-1)
bionic
Released (1.6.7-1ubuntu2.4)
focal
Released (1.9.4-2ubuntu1.2)
jammy Not vulnerable

kinetic Not vulnerable

lunar Not vulnerable

xenial Needed

mantic Not vulnerable

Patches:
upstream: https://github.com/NLnetLabs/unbound/commit/a3545867fcdec50307c776ce0af28d07046a52dd

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H