CVSS2
Attack Vector
NETWORK
Attack 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
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
AI Score
Confidence
High
EPSS
Percentile
52.0%
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
Red Hat: CVE-2020-19860
Mitre: CVE-2020-19860
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 |
CVSS2
Attack Vector
NETWORK
Attack 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
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
AI Score
Confidence
High
EPSS
Percentile
52.0%