798117 – net-dns/avahi: local denial of service (CVE-2021-3502)

Bug 798117 - net-dns/avahi: local denial of service (CVE-2021-3502)

Summary: net-dns/avahi: local denial of service (CVE-2021-3502)

Status:	RESOLVED DUPLICATE of bug 793953

Alias:	None

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

Importance:	Normal minor (vote)
Assignee:	Gentoo Security

URL:	https://github.com/lathiat/avahi/issu...
Whiteboard:	B3 [ebuild]
Keywords:

Depends on:
Blocks:

Reported:	2021-06-24 00:27 UTC by John Helmert III
Modified:	2021-06-24 03:04 UTC (History)
CC List:	2 users (show)

See Also:	CVE-2021-3468, CVE-2021-3502, CVE-2021-36217, CVE-2023-1981, CVE-2023-38469, CVE-2023-38470, CVE-2023-38471, CVE-2023-38472, CVE-2023-38473
Package list:
Runtime testing required:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description John Helmert III archtester

2021-06-24 00:27:23 UTC

CVE-2021-3502:

A flaw was found in avahi 0.8-5. A reachable assertion is present in avahi_s_host_name_resolver_start function allowing a local attacker to crash the avahi service by requesting hostname resolutions through the avahi socket or dbus methods for invalid hostnames. The highest threat from this vulnerability is to the service availability.


Patch: https://github.com/lathiat/avahi/commit/fd482a74625b8db8547b8cfca3ee3d3c6c721423
Please apply the patch, if suitable.

Comment 1 John Helmert III archtester

2021-06-24 03:04:57 UTC


*** This bug has been marked as a duplicate of bug 793953 ***