CVE-2023-5835 describes a problematic cross-site scripting (XSS) vulnerability discovered in the ubbparser.php component of the hu60wap6 software. This vulnerability allows remote attackers to inject malicious scripts, potentially leading to session hijacking or defacement. The affected software does not utilize versioning, making it difficult to pinpoint specific vulnerable releases. A patch, identified as a1cd9f12d7687243bfcb7ce295665acb83b9174e, is available to address this issue.
Successful exploitation of CVE-2023-5835 allows an attacker to inject arbitrary JavaScript code into the application's output. This code can then be executed in the context of a victim's browser when they visit a vulnerable page. The impact ranges from simple defacement to more severe consequences such as stealing session cookies, redirecting users to malicious websites, or even gaining control of the user's account. The lack of versioning makes it difficult to assess the full scope of affected deployments, but any instance using the vulnerable ubbparser.php file is at risk. The attack vector is remote, meaning an attacker does not require local access to exploit the vulnerability.
CVE-2023-5835 was publicly disclosed on 2023-10-28. The vulnerability's severity is assessed as LOW. As of this writing, there are no publicly available proof-of-concept exploits. It is not listed on the CISA KEV catalog. The lack of versioning complicates tracking potential exploitation attempts.
Exploit Status
EPSS
0.09% (26% percentile)
CVSS Vector
The primary mitigation for CVE-2023-5835 is to apply the provided patch: a1cd9f12d7687243bfcb7ce295665acb83b9174e. Since the software lacks versioning, applying this patch is the only known remediation. There are no immediate rollback steps available if the patch introduces unexpected issues, so thorough testing in a staging environment is highly recommended before deploying to production. Web application firewalls (WAFs) configured to detect and block XSS payloads might offer some protection, but relying solely on a WAF is not a substitute for patching. Input validation and output encoding should be implemented as a general security best practice to prevent future XSS vulnerabilities.
Apply the provided patch in commit a1cd9f12d7687243bfcb7ce295665acb83b9174e to correct the XSS vulnerability in the markdown function of the file src/class/ubbparser.php. Review the affected code and ensure that user input is being properly escaped to prevent the injection of malicious scripts. Deploy the patched version to your production environment.
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CVE-2023-5835 is a cross-site scripting (XSS) vulnerability in the ubbparser.php file of the hu60wap6 software, allowing remote attackers to inject malicious scripts.
If you are using hu60wap6 and have not applied the patch a1cd9f12d7687243bfcb7ce295665acb83b9174e, you are potentially affected. The lack of versioning makes precise identification difficult.
Apply the patch a1cd9f12d7687243bfcb7ce295665acb83b9174e. Thorough testing in a staging environment is recommended before deploying to production.
As of the current assessment, there are no confirmed reports of active exploitation, but vigilance is still advised.
Due to the nature of this software, a dedicated advisory may not exist. Consult relevant security forums and communities for updates.
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