PT-2019-9471 · Miek Gieben · Miek Gieben Dns Library

Tr3Ee · Published 2019-03-07 · Updated 2021-05-18 · CVE-2018-17419

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:N/A:H

Name of the Vulnerable Software and Affected Versions Miek Gieben DNS library versions prior to 1.0.10

Description The issue is related to a parsing error in the dns.ParseZone() function, which can cause a segmentation violation or a panic due to a nil pointer dereference when parsing a malformed zone file containing TA records. This can lead to denial of service.

Recommendations For versions prior to 1.0.10, update to version 1.0.10 or later to resolve the issue. As a temporary workaround, consider avoiding the use of the dns.ParseZone() function for parsing user-supplied input until a patch is available. Restrict access to the setTA function in scan rr.go to minimize the risk of exploitation.

Exploit

Fix

NULL Pointer Dereference

Resource Exhaustion

Weakness Enumeration

CWE-476

CWE-400

Related Identifiers

CVE-2018-17419

GHSA-9JCX-PR2F-QVQ5

GO-2020-0028

Affected Products

Miek Gieben Dns Library

References · 12

• 🔥 https://github.com/miekg/dns/issues/742 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-17419 · Security Note
• https://cve.org/CVERecord?id=CVE-2018-17419 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-17419 · Vendor Advisory
• https://osv.dev/vulnerability/GO-2020-0028 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-9jcx-pr2f-qvq5 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-17419 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-17419 · Vendor Advisory
• https://github.com/miekg/dns/commit/501e858f679edecd4a38a86317ce50271014a80d · Note
• https://github.com/miekg/dns · Note
• https://github.com/miekg/dns/pull/745/commits/f71d7d9d77d439b30a5e50900df5b1f988a50e5e · Note
• https://pkg.go.dev/vuln/GO-2020-0028 · Note