USN-6163-1: pano13 vulnerabilities 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) Source: USN-6163-1: pano13 vulnerabilities