CVE-2023-28998

The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server. Starting with version 3.0.0 and prior to version 3.6.5, a malicious server administrator can gain full access to an end-to-end encrypted folder. They can decrypt files, recover the folder structure, and add new files. Users should upgrade the Nextcloud Desktop client to 3.6.5 to receive a patch. No known workarounds are available.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.7 MEDIUM
PHYSICAL
LOW
HIGH
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
GitHub_MCNA
6.7 MEDIUM
PHYSICAL
LOW
HIGH
CVSS:3.1/AV:P/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
CVEADP
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 69%
VendorProductVersion
nextclouddesktop
3.0.0 ≤
𝑥
< 3.6.5
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
nextcloud-desktop
bullseye (security)
vulnerable
bullseye
no-dsa
buster
no-dsa
bookworm
3.7.3-1+deb12u1
fixed
sid
3.15.0-1
fixed
trixie
3.15.0-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
nextcloud-desktop
oracular
not-affected
noble
not-affected
mantic
not-affected
lunar
not-affected
kinetic
ignored
jammy
needs-triage
focal
needs-triage
bionic
dne
xenial
ignored
trusty
ignored
Common Weakness Enumeration
References
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
https://github.com/nextcloud/desktop/pull/5323
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr
https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_DanieleCoppola.pdf
https://github.com/nextcloud/desktop/pull/5323
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jh3g-wpwv-cqgr