Vulnerability Details : CVE-2021-32822
Potential exploit
The npm hbs package is an Express view engine wrapper for Handlebars. Depending on usage, users of hbs may be vulnerable to a file disclosure vulnerability. There is currently no patch for this vulnerability. hbs mixes pure template data with engine configuration options through the Express render API. By overwriting internal configuration options a file disclosure vulnerability may be triggered in downstream applications. For an example PoC see the referenced GHSL-2021-020.
Products affected by CVE-2021-32822
- cpe:2.3:a:hbs_project:hbs:-:*:*:*:*:node.js:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-32822
0.18%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 55 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-32822
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
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 | |
|
4.0
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N |
2.2
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2021-32822
-
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.Assigned by: nvd@nist.gov (Primary)
-
The product places sensitive information into files or directories that are accessible to actors who are allowed to have access to the files, but not to the sensitive information.Assigned by: security-advisories@github.com (Secondary)
References for CVE-2021-32822
-
https://securitylab.github.com/advisories/GHSL-2021-020-pillarjs-hbs/
GHSL-2021-020: File disclosure in hbs - CVE-2021-32822 | GitHub Security LabExploit;Third Party Advisory
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