Vulnerability · Published Oct 14, 2024 · Assigned by NCSC.ch
CVE-2024-8602XML Eternal Entity Attack in the Software Library taxstatement.jar
Medium 6.3
In plain English
A medium-severity XML external entity in Library taxstatement.jar from Schweizerische Steuerkonferenz. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).
Official description
When the XML is read from the codes in the PDF and parsed using a DocumentBuilder, the default settings of the DocumentBuilder allow for an XXE (XML External Entity) attack. Further information on this can be found on the website of the Open Worldwide Application Security Project (OWASP). An attacker could theoretically leverage this by delivering a manipulated PDF file to the target, and depending on the environment, various actions can be executed. These actions include: * Reading files from the operating system * Crashing the thread handling the parsing or causing it to enter an infinite loop * Executing HTTP requests * Loading additional DTDs or XML files * Under certain conditions, executing OS commands
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Schweizerische Steuerkonferenz | Library taxstatement.jar | 2.2.22.2.4 |
Weakness: CWE-611 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
References
- https://esteuer.ewv-ete.ch/fileadmin/esta/2024-10-09-update/24_09_esta_newsletter_de.pdf mailing-list
- https://mkiesel.ch/posts/swiss-tax-adventures-1/ technical-description