When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would have been interpreted as such and allowed arbitrary commands to be sent to the FTP server. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "firefox",
            "binary_version": "88.0+build2-0ubuntu0.16.04.1"
        },
        {
            "binary_name": "firefox-dev",
            "binary_version": "88.0+build2-0ubuntu0.16.04.1"
        },
        {
            "binary_name": "firefox-geckodriver",
            "binary_version": "88.0+build2-0ubuntu0.16.04.1"
        },
        {
            "binary_name": "firefox-mozsymbols",
            "binary_version": "88.0+build2-0ubuntu0.16.04.1"
        }
    ]
}{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "firefox",
            "binary_version": "88.0+build2-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "firefox-dev",
            "binary_version": "88.0+build2-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "firefox-geckodriver",
            "binary_version": "88.0+build2-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "firefox-mozsymbols",
            "binary_version": "88.0+build2-0ubuntu0.18.04.2"
        }
    ]
}{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "thunderbird",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "thunderbird-dev",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        },
        {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:78.11.0+build1-0ubuntu0.18.04.2"
        }
    ]
}{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "firefox",
            "binary_version": "88.0+build2-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "firefox-dev",
            "binary_version": "88.0+build2-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "firefox-geckodriver",
            "binary_version": "88.0+build2-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "firefox-mozsymbols",
            "binary_version": "88.0+build2-0ubuntu0.20.04.1"
        }
    ]
}{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "thunderbird",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "thunderbird-dev",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        },
        {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:78.11.0+build1-0ubuntu0.20.04.2"
        }
    ]
}