Bug 2044427 (CVE-2020-19860)

Summary:	CVE-2020-19860 ldns: heap overread vulnerability via zone file
Product:	[Other] Security Response	Reporter:	Sandipan Roy <saroy>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	paul.wouters, pemensik, rlescak
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ldns-1.8.0, ldns-1.8.1	Doc Type:	If docs needed, set a value
Doc Text:	A heap out-of-bounds read flaw was found in ldns, specifically within the ldns_rr_new_frm_str_internal function. This flaw allows an attacker to leak information on the heap by creating a malicious zone file.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-07-16 16:43:41 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2044428, 2051210, 2051211
Bug Blocks:	2044431

Description Sandipan Roy 2022-01-24 15:28:58 UTC

When ldns version 1.7.1 verifies a zone file, the ldns_rr_new_frm_str_internal function has a heap out of bounds read vulnerability. An attacker can leak information on the heap by constructing a zone file payload.

https://github.com/NLnetLabs/ldns/issues/50
https://github.com/NLnetLabs/ldns/commit/15d96206996bea969fbc918eb0a4a346f514b9f3

Comment 1 Sandipan Roy 2022-01-24 15:29:14 UTC

Created ldns tracking bugs for this issue:

Affects: fedora-all [bug 2044428]

Comment 6 Paul Wouters 2023-07-11 00:51:24 UTC

I cannot close this bug. Someone please close this. It's ancient and old and resolved in all branches years ago