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CVE-2019-11840
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
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..
CVSSv2.0 Score
- Severity
- Medium
- Base Score
- 4.3/10
- Exploit Score
- 8.6/10
- Access Vector
- Network
- Access Complexity
- Medium
- Authentication Required
- None
- Impact Score
- 2.9/10
- Confidentiality Impact
- Partial
- Availability Impact
- None
- Integrity Impact
- None
CVSSv3.1 Score
- Severity
- Medium
- Base Score
- 5.9/10
- Exploit Score
- 2.2/10
- Access Vector
- Network
- Access Complexity
- High
- Privileges Required
- None
- Impact Score
- 3.6/10
- Confidentiality Impact
- High
- Availability Impact
- None
- Integrity Impact
- None
- Scope
- Unchanged
- User Interaction
- None
Products Affected
CPE | Affected | Vulnerable | Excluding | Edit |
---|---|---|---|---|
cpe:2.3:a:golang:crypto:*:*:*:*:*:*:*:* |
Yes
|
- | 2019-03-20 | |
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
Yes
|
- | - |
References
- https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d
- https://github.com/golang/go/issues/30965
- https://bugzilla.redhat.com/show_bug.cgi?id=1691529
- https://lists.debian.org/debian-lts-announce/2019/06/msg00029.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00016.html
- https://lists.debian.org/debian-lts-announce/2020/11/msg00030.html
- https://lists.debian.org/debian-lts-announce/2021/01/msg00015.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html
- https://groups.google.com/forum/#%21msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ
- https://pkg.go.dev/vuln/GO-2022-0209