Vulnerability Details : CVE-2023-41889
Potential exploit
SHIRASAGI is a Content Management System. Prior to version 1.18.0, SHIRASAGI is vulnerable to a Post-Unicode normalization issue. This happens when a logical validation or a security check is performed before a Unicode normalization. The Unicode character equivalent of a character would resurface after the normalization. The fix is initially performing the Unicode normalization and then strip for all whitespaces and then checking for a blank string. This issue has been fixed in version 1.18.0.
Products affected by CVE-2023-41889
- cpe:2.3:a:ss-proj:shirasagi:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-41889
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 37 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-41889
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST | |
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2023-41889
-
The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.Assigned by: nvd@nist.gov (Primary)
-
The product does not properly handle when an input contains Unicode encoding.Assigned by: security-advisories@github.com (Secondary)
References for CVE-2023-41889
-
https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72
shirasagi/app/models/concerns/rdf/object.rb at f249ce3f06f6bfbc0017b38f5c13de424334c3ea · shirasagi/shirasagi · GitHubProduct
-
https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks
Unicode characters to Bypass Security ChecksExploit;Third Party Advisory
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https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r
Late-Unicode normalization vulnerability in shirasagi/shirasagi · Advisory · shirasagi/shirasagi · GitHubExploit;Mitigation;Vendor Advisory
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