CVE-2020-28924
Use of Cryptographically Weak Pseudo-Random Number Generator in Rclone
Reported by mitre · Published November 19, 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.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
| github.com | rclone/rclone | 0 |
| arch | rclone | 0 |
| n/a | n/a | * |
Timeline
- Nov 19, 2020 CVE Published
- Apr 14, 2021 EPSS Score (30 in total, the first dated here)
- Mar 11, 2026 Security Advisory (6 in total, the first dated here)
- Jun 17, 2026 CVE Updated
- Aug 31, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2020-28924
vulnetix vdb fixes CVE-2020-28924Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2020-28924/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- x_refsource_MISC
- x_refsource_MISC
- FEDORA-2020-3b0bb05117 vendor-advisoryx_refsource_FEDORA
- GLSA-202107-14 vendor-advisoryx_refsource_GENTOO
- https://nvd.nist.gov/vuln/detail/CVE-2020-28924 advisory
- https://github.com/advisories/GHSA-rmw5-xpg9-jr29 advisory