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The Compare Images feature enables comparison of the findings from two images within the same product, showing which findings are present in which image. This can be used to verify that specific vulnerabilities or security issues have been successfully addressed between image versions. It’s also useful when trying to identify security regressions or new vulnerabilities that may have been introduced. Images can be compared from the product dashboard by selecting the two images you want to compare from the list using the checkboxes left of the image’s title (see below). A list of two images on the product page Once exactly two images are selected, the compare option will show up (see below). Clicking it will open the compare view for the selected images. A list of two selected images on the product page with the comparison button visible above the image list. The compare view can also be reached from the top compare button (see below). This one is always visible and will open the compare view with the two most recent images selected. The alternative comparison button on the top of the product dashboard. On the compare view, the names of the images that are being compared are shown on top and can be changed by selecting different images from the dropdowns (see below). Left image name dropdown opened. However the comparison view is opened, it always lists all findings that are in at least one of the two images being compared. The list behaves just like the findings grid and supports custom views and different columns, filters and sort orders. One difference is that it has an additional column called Comparison that shows for every finding whether it’s
  • Not Found: present in the left image but not the right,
  • Found: present in the right image but not the left, or
  • Not Changed: present in both images.

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Comparing Images

To verify a finding was remediated and thus no longer exists in an image, first select the vulnerable image, the one where the finding is present, on the right and the fixed image on the left of the comparison view. If they’re on opposite sides of the comparison view, the swap button between them (marked below) swaps the images around. Image of the swap button between the two image name dropdowns. Once the order is correct, filter the Comparison column for the Not Found entries only to exclude the findings that are present in both images. The result is the list of remediated findings (see below). The findings list on the image comparison view with only Not Found findings. Reversing the order of the two images using the swap button and filtering by the Comparison column’s Found entries will show the opposite situation: all newly detected vulnerabilities (see below). The findings list on the image comparison view with only Found findings.