CVE-2020-28924
mediumpriority · track · 30EPSS 0.014 · 72 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- GHSA-rmw5-xpg9-jr29Use of Cryptographically Weak Pseudo-Random Number Generator in Rclone2021-06-10ghsa · osvUS
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.
- BIT-rclone-2020-289242024-03-06vendor · osvUS
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.
- GO-2022-0878Use of Cryptographically Weak Pseudo-Random Number Generator in Rclone in github.com/rclone/rclone2024-08-21vendor · osvUS
Use of Cryptographically Weak Pseudo-Random Number Generator in Rclone in github.com/rclone/rclone
also known as (6)
Other names and identifiers for this entity.
- CNNVD-202011-1688cnnvd
- EUVD-2021-1401enisa_euvd
- GHSA-rmw5-xpg9-jr29enisa_euvd
- BIT-rclone-2020-28924osv
- GHSA-rmw5-xpg9-jr29osv
- GO-2022-0878osv
sources
Which sources assert this record, and when.
references (17)
External citations — patches, advisories, analysis.
- https://github.com/rclone/rclone/commit/7985df37681f54d013816a4641da4f9b085b3aa5Patchcnnvd
- https://github.com/rclone/rclone/issues/4783cnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIFT24Q6EFXLQZ24AER2QGFFZLMIPCD/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-28924cnnvd
- https://packetstormsecurity.com/files/163436/Gentoo-Linux-Security-Advisory-202107-14.htmlcnnvd
- https://rclone.org/downloads/cnnvd
- https://security.gentoo.org/glsa/202107-14cnnvd
- https://vigilance.fr/vulnerability/rclone-weak-password-generation-33968cnnvd
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