National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-11840 Detail

Current Description

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.

Source:  MITRE
Description Last Modified:  05/09/2019
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1691529 Issue Tracking Vendor Advisory
https://github.com/golang/go/issues/30965 Third Party Advisory
https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d Mailing List Patch Third Party Advisory
https://groups.google.com/forum/#!msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ Mailing List Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • Use of Insufficiently Random Values (CWE-330)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:golang:crypto:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
2019-03-20


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-11840
NVD Published Date:
05/09/2019
NVD Last Modified:
05/10/2019