CVE-2022-40743
Published: 19 December 2022
Summary
CVE-2022-40743 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Apache Traffic Server. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 7.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2022-40743 is an improper input validation flaw in the xdebug plugin of Apache Traffic Server that can be leveraged for cross-site scripting and cache poisoning. The vulnerability affects versions 9.0.0 through 9.1.3 of the server and is tracked under CWE-79 with a CVSS 3.1 base score of 6.1.
An unauthenticated remote attacker can supply crafted input that triggers the flaw when a user interacts with the affected component, allowing limited injection of malicious content that executes in the victim's context and potentially poisons cached responses due to the changed scope of the impact.
Apache advisory information directs users to upgrade to version 9.1.4 or later to address the issue, with the fix referenced in the project's mailing list announcements.
The associated EPSS score has remained flat at 0.1931 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-44011
Vulnerability details
Improper Input Validation vulnerability for the xdebug plugin in Apache Software Foundation Apache Traffic Server can lead to cross site scripting and cache poisoning attacks.This issue affects Apache Traffic Server: 9.0.0 to 9.1.3. Users should upgrade to 9.1.4 or later…
more
versions.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.