CVE-2019-11840
An issue was discovered in the supplementary Go cryptography library, golang.org/x/crypto, before v0.0.0-20190320223903-b7391e95e576.
Does this matter?
Lower severity and a low EPSS score (3.45%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 3.45% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-330
- Affected
- golang/crypto · debian/debian linux
- Source
- cve@mitre.org
EPSS 3.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1691529Issue Tracking, Vendor Advisory
- https://github.com/golang/go/issues/30965Third Party Advisory
- https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113dMailing List, Patch, Third Party Advisory
- https://groups.google.com/forum/#%21msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJPermissions Required
- https://lists.debian.org/debian-lts-announce/2019/06/msg00029.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00014.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00016.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00030.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/01/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00017.htmlThird Party Advisory
- https://pkg.go.dev/vuln/GO-2022-0209Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1691529Issue Tracking, Vendor Advisory
- https://github.com/golang/go/issues/30965Third Party Advisory
- https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113dMailing List, Patch, Third Party Advisory
- https://groups.google.com/forum/#%21msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJPermissions Required
- https://lists.debian.org/debian-lts-announce/2019/06/msg00029.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00014.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00016.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00030.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/01/msg00015.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/06/msg00017.htmlThird Party Advisory
- https://pkg.go.dev/vuln/GO-2022-0209Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.