| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1840-1, DLA-2402-1, DLA-2442-1, DLA-2454-1, DLA-2527-1, DLA-3455-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| golang-go.crypto (PTS) | jessie, jessie (lts) | 0.0~hg190-1+deb8u2 | fixed |
| stretch (security), stretch (lts), stretch | 1:0.0~git20170407.0.55a552f+REALLY.0.0~git20161012.0.5f31782-1+deb8u1 | fixed |
| buster (security), buster, buster (lts) | 1:0.0~git20181203.505ab14-1+deb10u1 | fixed |
| bullseye | 1:0.0~git20201221.eec23a3-1 | fixed |
| bookworm | 1:0.4.0-1 | fixed |
| sid, trixie | 1:0.25.0-1 | fixed |
| obfs4proxy (PTS) | stretch (security), stretch (lts), stretch | 0.0.7-1+deb8u1 | fixed |
| rclone (PTS) | stretch (security), stretch (lts), stretch | 1.35-1+deb8u1 | fixed |
| snapd (PTS) | stretch (security) | 2.21-2+deb9u1 | fixed |
| stretch (lts), stretch | 2.21-2+deb9u3 | fixed |
The information below is based on the following data on fixed versions.