GLSA 202101-38: NSD: Symbolic link traversal
| Severity: | normal |
| Title: | NSD: Symbolic link traversal |
| Date: | 01/29/2021 |
| Bugs: | |
| ID: | 202101-38 |
Synopsis
A vulnerability was discovered in NSD which could allow a local attacker to cause a Denial of Service condition.Background
An authoritative only, high performance, open source name server
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| net-dns/nsd | < 4.3.4 | >= 4.3.4 | All supported architectures |
Description
A local vulnerability was discovered that would allow for a local symlink attack due to how NSD handles PID files.
Impact
A local attacker could cause a Denial of Service condition.
Workaround
There is no known workaround at this time.
Resolution
All NSD users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dns/nsd-4.3.4"
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.