Description
avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product.
Published: 2021-02-17
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3047-1 avahi security update
EUVD EUVD EUVD-2021-13508 avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-03T20:33:40.829Z

Reserved: 2021-02-05T00:00:00.000Z

Link: CVE-2021-26720

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-02-17T22:15:12.710

Modified: 2024-11-21T05:56:44.693

Link: CVE-2021-26720

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses