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CVE-2019-11840

Published: May 9, 2019Updated: May 18, 2026 Sources: CVE List NVD GHSACWE-330
5.9MEDIUM
NVD MITRE
EPSS Score
3.5%
Top 12.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

An issue was discovered in the supplementary Go cryptography library, golang.org/x/crypto, before v0.0.0-20190320223903-b7391e95e576. A flaw was found in the amd64 implementation of the golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa packages. 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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-330

Affected Products

Go
package-ecosystem
golang.org/x/crypto
OSS Libraries
golang
oss-project·US
crypto
OSS Libraries
debian
oss-project·GBaka debian gnu/linux
debian linuxOn-premOS
Operating Systems / linux-distro
and 1 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Credential Access
View detailed technique mapping

References

https://groups.google.com/forum/#%21msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ
groups.google.com
https://bugzilla.redhat.com/show_bug.cgi?id=1691529
bugzilla.redhat.com
https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d
go.googlesource.com
and 14 more references View all →

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