Arch Linux Security Advisory ASA-201910-6
========================================
Severity: High
Date    : 2019-10-11
CVE-ID  : CVE-2019-16866
Package : unbound
Type    : denial of service
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1042

Summary
======
The package unbound before version 1.9.4-1 is vulnerable to denial of
service.

Resolution
=========
Upgrade to 1.9.4-1.

# pacman -Syu "unbound>=1.9.4-1"

The problem has been fixed upstream in version 1.9.4.

Workaround
=========
None.

Description
==========
Due to an error in parsing NOTIFY queries, it is possible for Unbound
from 1.7.1 up to and including 1.9.3 to continue processing malformed
queries and may ultimately result in a pointer dereference in
uninitialized memory. This results in a crash of the Unbound daemon.

Impact
=====
A remote attacker might be able to crash the Unbound server via crafted
NOTIFY queries.

References
=========
https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt
https://github.com/NLnetLabs/unbound/commit/b60c4a472c856f0a98120b7259e991b3a6507eb5
https://security.archlinux.org/CVE-2019-16866

ArchLinux: 201910-6: unbound: denial of service

October 11, 2019

Summary

Due to an error in parsing NOTIFY queries, it is possible for Unbound from 1.7.1 up to and including 1.9.3 to continue processing malformed queries and may ultimately result in a pointer dereference in uninitialized memory. This results in a crash of the Unbound daemon.

Resolution

Upgrade to 1.9.4-1. # pacman -Syu "unbound>=1.9.4-1"
The problem has been fixed upstream in version 1.9.4.

References

https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt https://github.com/NLnetLabs/unbound/commit/b60c4a472c856f0a98120b7259e991b3a6507eb5 https://security.archlinux.org/CVE-2019-16866

Severity
Package : unbound
Type : denial of service
Remote : Yes
Link : https://security.archlinux.org/AVG-1042

Workaround

None.

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