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AmazonALAS2-2023-2032

HistoryApr 27, 2023 - 6:37 p.m.

Medium: ldns

2023-04-2718:37:00

alas.aws.amazon.com

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

6.6 Medium

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

0.001 Low

EPSS

Percentile

49.7%

JSON

Issue Overview:

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. (CVE-2020-19860)

Affected Packages:

ldns

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update ldns to update your system.

New Packages:

aarch64:  
    ldns-1.6.16-10.amzn2.0.3.aarch64  
    ldns-devel-1.6.16-10.amzn2.0.3.aarch64  
    ldns-python-1.6.16-10.amzn2.0.3.aarch64  
    ldns-debuginfo-1.6.16-10.amzn2.0.3.aarch64  
  
i686:  
    ldns-1.6.16-10.amzn2.0.3.i686  
    ldns-devel-1.6.16-10.amzn2.0.3.i686  
    ldns-python-1.6.16-10.amzn2.0.3.i686  
    ldns-debuginfo-1.6.16-10.amzn2.0.3.i686  
  
noarch:  
    ldns-doc-1.6.16-10.amzn2.0.3.noarch  
  
src:  
    ldns-1.6.16-10.amzn2.0.3.src  
  
x86_64:  
    ldns-1.6.16-10.amzn2.0.3.x86_64  
    ldns-devel-1.6.16-10.amzn2.0.3.x86_64  
    ldns-python-1.6.16-10.amzn2.0.3.x86_64  
    ldns-debuginfo-1.6.16-10.amzn2.0.3.x86_64

Additional References

Red Hat: CVE-2020-19860

Mitre: CVE-2020-19860

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64ldns< 1.6.16-10.amzn2.0.3ldns-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux2aarch64ldns-devel< 1.6.16-10.amzn2.0.3ldns-devel-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux2aarch64ldns-python< 1.6.16-10.amzn2.0.3ldns-python-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux2aarch64ldns-debuginfo< 1.6.16-10.amzn2.0.3ldns-debuginfo-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux2i686ldns< 1.6.16-10.amzn2.0.3ldns-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux2i686ldns-devel< 1.6.16-10.amzn2.0.3ldns-devel-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux2i686ldns-python< 1.6.16-10.amzn2.0.3ldns-python-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux2i686ldns-debuginfo< 1.6.16-10.amzn2.0.3ldns-debuginfo-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux2noarchldns-doc< 1.6.16-10.amzn2.0.3ldns-doc-1.6.16-10.amzn2.0.3.noarch.rpm
Amazon Linux2x86_64ldns< 1.6.16-10.amzn2.0.3ldns-1.6.16-10.amzn2.0.3.x86_64.rpm

OS	Version	Architecture	Package	Version	Filename
Amazon Linux	2	aarch64	ldns	< 1.6.16-10.amzn2.0.3	ldns-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux	2	aarch64	ldns-devel	< 1.6.16-10.amzn2.0.3	ldns-devel-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux	2	aarch64	ldns-python	< 1.6.16-10.amzn2.0.3	ldns-python-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux	2	aarch64	ldns-debuginfo	< 1.6.16-10.amzn2.0.3	ldns-debuginfo-1.6.16-10.amzn2.0.3.aarch64.rpm
Amazon Linux	2	i686	ldns	< 1.6.16-10.amzn2.0.3	ldns-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux	2	i686	ldns-devel	< 1.6.16-10.amzn2.0.3	ldns-devel-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux	2	i686	ldns-python	< 1.6.16-10.amzn2.0.3	ldns-python-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux	2	i686	ldns-debuginfo	< 1.6.16-10.amzn2.0.3	ldns-debuginfo-1.6.16-10.amzn2.0.3.i686.rpm
Amazon Linux	2	noarch	ldns-doc	< 1.6.16-10.amzn2.0.3	ldns-doc-1.6.16-10.amzn2.0.3.noarch.rpm
Amazon Linux	2	x86_64	ldns	< 1.6.16-10.amzn2.0.3	ldns-1.6.16-10.amzn2.0.3.x86_64.rpm