CVE-2020-28924

Published: 19 November 2020

An issue was discovered in Rclone before 1.53.3. Due to the use of a weak random number generator, the password generator has been producing weak passwords with much less entropy than advertised. The suggested passwords depend deterministically on the time the second rclone was started. This limits the entropy of the passwords enormously. These passwords are often used in the crypt backend for encryption of data. It would be possible to make a dictionary of all possible passwords with about 38 million entries per password length. This would make decryption of secret material possible with a plausible amount of effort. NOTE: all passwords generated by affected versions should be changed.

Priority

Medium

CVSS 3 base score: 7.5

Status

Package Release Status
rclone
Launchpad, Ubuntu, Debian
Upstream
Released (1.53.3-1)
Ubuntu 21.10 (Impish Indri) Not vulnerable
(1.53.3-1)
Ubuntu 21.04 (Hirsute Hippo) Not vulnerable
(1.53.3-1)
Ubuntu 20.04 LTS (Focal Fossa) Needs triage

Ubuntu 18.04 LTS (Bionic Beaver) Needs triage

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Patches:
Upstream: https://github.com/rclone/rclone/commit/4c215cc81ec6143ae3c64633700cb341ca28df2d
Upstream: https://github.com/rclone/rclone/commit/c8b11d27e1fe261fdfba6b8910fda69356c9c777

Notes

AuthorNote
sbeattie
debian asserts this was introduced in upstream in
193c30d57038017370594d5bc8ee9bc32580ddf2 v1.49; needs verification.

References

Bugs