CVE-2021-21253
MEDIUMDescription
OnlineVotingSystem is an open source project hosted on GitHub. OnlineVotingSystem before version 1.1.2 hashes user passwords without a salt, which is vulnerable to dictionary attacks. Therefore there is a threat of security breach in the voting system. Without a salt, it is much easier for attackers to pre-compute the hash value using dictionary attack techniques such as rainbow tables to crack passwords. This problem is fixed and published in version 1.1.2. A long randomly generated salt is added to the password hash function to better protect passwords stored in the voting system.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 51% of all known CVEs.
References
Related Vulnerabilities
Other CWE-759 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2023-1430 | Medium | 6.5 | 0.8% | - | - |
| CVE-2020-16244 | High | 7.2 | 0.7% | - | - |
| CVE-2020-25164 | Medium | 6.5 | 0.6% | - | - |
| CVE-2025-34208 | High | 7.5 | 0.4% | - | - |
| CVE-2024-8453 | Medium | 4.9 | 0.3% | - | Fix |
| CVE-2024-36440 | Medium | 6.8 | 0.3% | - | - |
Common questions
How do I fix CVE-2021-21253?
Upgrade onlinevotingsystem to 1.1.2 or later.
Is CVE-2021-21253 being actively exploited?
Not that we know of. CVE-2021-21253 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.74% is the estimated probability that it will be exploited in the next 30 days. That is higher than 51% of all scored CVEs.
How severe is CVE-2021-21253?
CVE-2021-21253 has a CVSS v3 base score of 5.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2021-21253 affect?
Published advisories record a fix for onlinevotingsystem (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.