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It was discovered that pano13 did not properly validate the prefix provided
for PTcrop’s output. An attacker could use this issue to cause pano13 to
crash, resulting in a denial of service, or possibly execute arbitrary
code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,
Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-20307)
It was discovered that pano13 did not properly handle certain crafted TIFF
images. An attacker could use this issue to cause pano13 to crash,
resulting in a denial of service. (CVE-2021-33293)