GLSA 202012-11: c-ares: Denial of service
| Severity: | low |
| Title: | c-ares: Denial of service |
| Date: | 12/23/2020 |
| Bugs: | |
| ID: | 202012-11 |
Synopsis
A Denial of Service vulnerability was discovered in c-ares.Background
c-ares is an asynchronous resolver library.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-dns/c-ares | < 1.17.1 | >= 1.17.1 | All supported architectures |
Description
It was discovered that c-ares incorrectly handled certain DNS requests.
Impact
A remote attacker, able to trigger a DNS request for a host of their choice by an application linked against c-ares, could possibly cause a Denial of Service condition.
Workaround
There is no known workaround at this time.
Resolution
All c-ares users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/c-ares-1.17.1"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.