PT-2018-10182 · Cz.Nic · Knot Resolver

Marek Vavrusa · Published 2018-08-02 · Updated 2020-02-18 · CVE-2018-10920

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Knot Resolver versions prior to 2.4.1

Description The issue is related to an improper input validation bug in the DNS resolver component. This bug allows a remote attacker to poison the cache.

Recommendations For versions prior to 2.4.1, update to version 2.4.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the DNS resolver component to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-10920

Affected Products

Knot Resolver

References · 9

• https://osv.dev/vulnerability/UBUNTU-CVE-2018-10920 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2018-10920 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-10920 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-10920 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2018-10920 · Vendor Advisory
• https://knot-resolver.cz/2018-08-02-knot-resolver-2.4.1.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-10920 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-10920 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10920 · Note