Vulnerability Details : CVE-2021-21253
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.
Exploit prediction scoring system (EPSS) score for CVE-2021-21253
Probability of exploitation activity in the next 30 days: 0.07%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 30 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-21253
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
|
5.8
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
3.9
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2021-21253
-
The product uses a one-way cryptographic hash against an input that should not be reversible, such as a password, but the product does not also use a salt as part of the input.Assigned by: security-advisories@github.com (Secondary)
-
The product generates a hash for a password, but it uses a scheme that does not provide a sufficient level of computational effort that would make password cracking attacks infeasible or expensive.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-21253
-
https://github.com/dbijaya/OnlineVotingSystem/commit/0181cb0272857696c8eb3e44fcf6cb014ff90f09
Add a salt to SHA-256 hash · dbijaya/OnlineVotingSystem@0181cb0 · GitHubPatch;Third Party Advisory
-
https://github.com/dbijaya/OnlineVotingSystem/security/advisories/GHSA-wwg8-372v-v332
Use of a One-Way Hash without a Salt · Advisory · dbijaya/OnlineVotingSystem · GitHubThird Party Advisory
Products affected by CVE-2021-21253
- cpe:2.3:a:onlinevotingsystem_project:onlinevotingsystem:*:*:*:*:*:*:*:*