Impact

Using API or Controller based versions negative quantity is not adequately validated hence creating incorrect shopping cart and order total.

Patches

Adding a back-end verification to check that quantity parameter isn't negative. If so, it is set to 1. Patched in 2.11.0

Workarounds

Without uprading, it's possible to just apply the fixes in the same files it's done for the patch. Or you use javax constraint validation on the quantity parameter.

References

Input Validation
Using bean validation constraint
Commits with fixes
CVE Details below :
Mitre
NVD

Credits

Found and solved by Yannick Gosset from Aix-Marseille University cybersecurity
master program supervised by Yassine Ilmi

References

• GHSA-w8rc-pgxq-x2cj
• shopizer-ecommerce/shopizer@929ca08
• https://nvd.nist.gov/vuln/detail/CVE-2020-11007