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
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Mixed 8 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1:0.0~git20200221.2aa609c-1 |
| sid | Fixed | 1:0.0~git20200221.2aa609c-1 |
| forky | Fixed | 1:0.0~git20200221.2aa609c-1 |
| bullseye | Fixed | 1:0.0~git20200221.2aa609c-1 |
| bookworm | Fixed | 1:0.0~git20200221.2aa609c-1 |
| 10.0 | Affected | — |
| 9.0 | Affected | — |
| 8.0 | 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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.