Vulnerability Details : CVE-2020-21526
An Arbitrary file writing vulnerability in halo v1.1.3. In an interface to write files in the background, a directory traversal check is performed on the input path parameter, but the startsWith function can be used to bypass it.
Vulnerability category: Directory traversal
Products affected by CVE-2020-21526
- cpe:2.3:a:halo:halo:1.1.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-21526
0.65%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 79 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-21526
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-21526
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-21526
-
https://github.com/halo-dev/halo/issues/421
An Arbitrary file writing vulnerability in the backend · Issue #421 · halo-dev/halo · GitHubExploit;Issue Tracking;Third Party Advisory
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