Vulnerability · Published Nov 19, 2020 · Assigned by mitre
CVE-2020-28924
High 7.5
In plain English
A high-severity security flaw in the rclone package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 72% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rclone | 1.53.3-1 | DEBIAN-CVE-2020-28924 |
| Debian:13 | rclone | 1.53.3-1 | DEBIAN-CVE-2020-28924 |
| Go | github.com/rclone/rclone | 1.53.3 | GHSA-rmw5-xpg9-jr29 |
| Go | github.com/rclone/rclone | 1.53.3 | GO-2022-0878 |
Affected products (as reported)
References
- https://rclone.org/downloads/ x_refsource_MISC
- https://github.com/rclone/rclone/issues/4783 x_refsource_MISC
- FEDORA-2020-3b0bb05117 vendor-advisory, x_refsource_FEDORA
- GLSA-202107-14 vendor-advisory, x_refsource_GENTOO