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Vulnerability CVE-2020-1921
Published: 2021-03-10
| Description: |
In the crypt function, we attempt to null terminate a buffer using the size of the input salt without validating that the offset is within the buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0. |
Type:
CWE-787
CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
5/10 |
2.9/10 |
10/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
No required |
| Confidentiality impact |
Integrity impact |
Availability impact |
None |
None |
Partial |
References: |
https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca
https://hhvm.com/blog/2021/02/25/security-update.html
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