754936 – (CVE-2020-8277) [Tracker] c-ares: Denial of Service with malicious DNS record (CVE-2020-8277)

Bug 754936 (CVE-2020-8277) - [Tracker] c-ares: Denial of Service with malicious DNS record (CVE-2020-8277)

Summary: [Tracker] c-ares: Denial of Service with malicious DNS record (CVE-2020-8277)

Status:	RESOLVED FIXED

Alias:	CVE-2020-8277

Product:	Gentoo Security
Classification:	Unclassified
Component:	Vulnerabilities (show other bugs)
Hardware:	All Linux

Importance:	Normal normal
Assignee:	Gentoo Security

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Depends on:	754939 754942
Blocks:
	Show dependency tree

Reported:	2020-11-16 16:51 UTC by Sam James
Modified:	2021-01-28 03:08 UTC (History)
CC List:	0 users

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Runtime testing required:	---

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Description Sam James archtester

2020-11-16 16:51:27 UTC

Noticed after the nodejs security release:
"CVE-2020-8277: Denial of Service through DNS request (High). A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service by getting the application to resolve a DNS record with a larger number of responses."

Bug: https://github.com/c-ares/c-ares/issues/371
Patch: https://github.com/c-ares/c-ares/commit/0d252eb3b2147179296a3bdb4ef97883c97c54d3