An issue was discovered in supplementary Go cryptography libraries, aka golang-googlecode-go-crypto, before 2019-03-20. A flaw was found in the amd64 implementation of golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa. If more than 256 GiB of keystream is generated, or if the counter otherwise grows greater than 32 bits, the amd64 implementation will first generate incorrect output, and then cycle back to previously generated keystream. Repeated keystream bytes can lead to loss of confidentiality in encryption applications, or to predictability in CSPRNG applications.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2019-11840 - Medium Severity Vulnerability
Vulnerable Library - github.com/miekg/DNS-v1.0.0
DNS library in Go
Library home page: https://proxy.golang.org/github.com/miekg/dns/@v/v1.0.0.zip
Dependency Hierarchy: - :x: **github.com/miekg/DNS-v1.0.0** (Vulnerable Library)
Found in HEAD commit: 27377d4ea18db54381a8dc972091f3c342337ec9
Found in base branch: master
Vulnerability Details
An issue was discovered in supplementary Go cryptography libraries, aka golang-googlecode-go-crypto, before 2019-03-20. A flaw was found in the amd64 implementation of golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa. If more than 256 GiB of keystream is generated, or if the counter otherwise grows greater than 32 bits, the amd64 implementation will first generate incorrect output, and then cycle back to previously generated keystream. Repeated keystream bytes can lead to loss of confidentiality in encryption applications, or to predictability in CSPRNG applications.
Publish Date: 2019-05-09
URL: CVE-2019-11840
CVSS 3 Score Details (5.9)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: None - Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://bugzilla.redhat.com/show_bug.cgi?id=1691529
Fix Resolution: Upgrade to version golang.org/x/crypto v0.0.0-0.20190320223903-b7391e95e576 or greater
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