An issue was discovered in Open Design Alliance Drawings SDK before 2021.11. A NULL pointer dereference exists when rendering malformed .DXF and .DWG files. This can allow attackers to cause a crash, potentially enabling a denial of service attack (Crash, Exit, or Restart). This is issue 1 of 3.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-25175
• https://cert-portal.siemens.com/productcert/pdf/ssa-155599.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-663999.pdf
• https://www.opendesign.com/security-advisories
• https://www.zerodayinitiative.com/advisories/ZDI-21-218/
• https://www.zerodayinitiative.com/advisories/ZDI-21-223/
• https://www.zerodayinitiative.com/advisories/ZDI-21-224/
• https://www.zerodayinitiative.com/advisories/ZDI-21-244/
• https://www.zerodayinitiative.com/advisories/ZDI-21-245/
• https://www.zerodayinitiative.com/advisories/ZDI-21-246/