CVE-2019-11840
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-11840
Vendor advisory: cve@mitre.org — https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d
Vendor advisory: cve@mitre.org — https://bugzilla.redhat.com/show_bug.cgi?id=1691529
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 1:0.0~git20200221.2aa609c-1 |
| debian | bullseye | fixed | 1:0.0~git20200221.2aa609c-1 |
| debian | forky | fixed | 1:0.0~git20200221.2aa609c-1 |
| debian | sid | fixed | 1:0.0~git20200221.2aa609c-1 |
| debian | trixie | fixed | 1:0.0~git20200221.2aa609c-1 |
| debian | 8.0 | affected | |
| debian | 9.0 | affected | |
| debian | 10.0 | affected | |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | golang.org/x/crypto | <0.0.0-20190320223903-b7391e95e576 | 0.0.0-20190320223903-b7391e95e576 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| golang | crypto | - | |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1691529
- https://github.com/golang/go/issues/30965
- https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d
- https://groups.google.com/forum/#%21msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ
- 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://pkg.go.dev/vuln/GO-2022-0209
- https://nvd.nist.gov/vuln/detail/CVE-2019-11840
- https://github.com/golang/go
- https://go.dev/cl/168406
- https://go.dev/issue/30965
- https://groups.google.com/forum/#!msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ
- https://groups.google.com/g/golang-announce/c/tjyNcJxb2vQ/m/n0NRBziSCAAJ
- https://security-tracker.debian.org/tracker/CVE-2019-11840
CWEs
CWE-330
Verify integrity in audit chain (admin only). AS-IS.