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.
Notes
| Author | Note |
|---|---|
| sbeattie | debian asserts this was introduced in upstream in 193c30d57038017370594d5bc8ee9bc32580ddf2 v1.49; needs verification. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
rclone Launchpad, Ubuntu, Debian |
bionic |
Needs triage
|
| focal |
Needs triage
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Not vulnerable
(1.53.3-1)
|
|
| impish |
Not vulnerable
(1.53.3-1)
|
|
| jammy |
Not vulnerable
(1.53.3-1)
|
|
| kinetic |
Not vulnerable
(1.53.3-1)
|
|
| lunar |
Not vulnerable
(1.53.3-1)
|
|
| mantic |
Not vulnerable
(1.53.3-1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(1.53.3-1)
|
|
| xenial |
Does not exist
|
|
|
Patches: upstream: https://github.com/rclone/rclone/commit/4c215cc81ec6143ae3c64633700cb341ca28df2d upstream: https://github.com/rclone/rclone/commit/c8b11d27e1fe261fdfba6b8910fda69356c9c777 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |