UBUNTU-CVE-2017-7820

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Source
https://ubuntu.com/security/CVE-2017-7820
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-7820.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2017-7820
Upstream
  • CVE-2017-7820
Downstream
Related
Published
2017-10-02T00:00:00Z
Modified
2025-09-08T16:44:13Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

The "instanceof" operator can bypass the Xray wrapper mechanism. When called on web content from the browser itself or an extension the web content can provide its own result for that operator, possibly tricking the browser or extension into mishandling the element. This vulnerability affects Firefox < 56.

References

Affected packages

Ubuntu:14.04:LTS / firefox

Package

Name
firefox
Purl
pkg:deb/ubuntu/firefox@56.0+build6-0ubuntu0.14.04.1?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
56.0+build6-0ubuntu0.14.04.1

Affected versions

24.*

24.0+build1-0ubuntu1

25.*

25.0+build3-0ubuntu0.13.10.1

28.*

28.0~b2+build1-0ubuntu2
28.0+build1-0ubuntu1
28.0+build2-0ubuntu1
28.0+build2-0ubuntu2

29.*

29.0+build1-0ubuntu0.14.04.2

30.*

30.0+build1-0ubuntu0.14.04.3

31.*

31.0+build1-0ubuntu0.14.04.1

32.*

32.0+build1-0ubuntu0.14.04.1
32.0.3+build1-0ubuntu0.14.04.1

33.*

33.0+build2-0ubuntu0.14.04.1

34.*

34.0+build2-0ubuntu0.14.04.1

35.*

35.0+build3-0ubuntu0.14.04.2
35.0.1+build1-0ubuntu0.14.04.1

36.*

36.0+build2-0ubuntu0.14.04.4
36.0.1+build2-0ubuntu0.14.04.1
36.0.4+build1-0ubuntu0.14.04.1

37.*

37.0+build2-0ubuntu0.14.04.1
37.0.1+build1-0ubuntu0.14.04.1
37.0.2+build1-0ubuntu0.14.04.1

38.*

38.0+build3-0ubuntu0.14.04.1

39.*

39.0+build5-0ubuntu0.14.04.1
39.0.3+build2-0ubuntu0.14.04.1

40.*

40.0+build4-0ubuntu0.14.04.1
40.0+build4-0ubuntu0.14.04.4
40.0.3+build1-0ubuntu0.14.04.1

41.*

41.0+build3-0ubuntu0.14.04.1
41.0.1+build2-0ubuntu0.14.04.1
41.0.2+build2-0ubuntu0.14.04.1

42.*

42.0+build2-0ubuntu0.14.04.1

43.*

43.0+build1-0ubuntu0.14.04.1
43.0.4+build3-0ubuntu0.14.04.1

44.*

44.0+build3-0ubuntu0.14.04.1
44.0.1+build2-0ubuntu0.14.04.1
44.0.2+build1-0ubuntu0.14.04.1

45.*

45.0+build2-0ubuntu0.14.04.1
45.0.1+build1-0ubuntu0.14.04.2
45.0.2+build1-0ubuntu0.14.04.1

46.*

46.0+build5-0ubuntu0.14.04.2
46.0.1+build1-0ubuntu0.14.04.3

47.*

47.0+build3-0ubuntu0.14.04.1

48.*

48.0+build2-0ubuntu0.14.04.1

49.*

49.0+build4-0ubuntu0.14.04.1
49.0.2+build2-0ubuntu0.14.04.1

50.*

50.0+build2-0ubuntu0.14.04.2
50.0.2+build1-0ubuntu0.14.04.1
50.1.0+build2-0ubuntu0.14.04.1

51.*

51.0.1+build2-0ubuntu0.14.04.1
51.0.1+build2-0ubuntu0.14.04.2

52.*

52.0+build2-0ubuntu0.14.04.1
52.0.1+build2-0ubuntu0.14.04.1
52.0.2+build1-0ubuntu0.14.04.1

53.*

53.0+build6-0ubuntu0.14.04.1
53.0.2+build1-0ubuntu0.14.04.2
53.0.3+build1-0ubuntu0.14.04.2

54.*

54.0+build3-0ubuntu0.14.04.1

55.*

55.0.1+build2-0ubuntu0.14.04.2
55.0.2+build1-0ubuntu0.14.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "56.0+build6-0ubuntu0.14.04.1",
            "binary_name": "firefox"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.14.04.1",
            "binary_name": "firefox-dev"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.14.04.1",
            "binary_name": "firefox-globalmenu"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.14.04.1",
            "binary_name": "firefox-mozsymbols"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.14.04.1",
            "binary_name": "firefox-testsuite"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / firefox

Package

Name
firefox
Purl
pkg:deb/ubuntu/firefox@56.0+build6-0ubuntu0.16.04.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
56.0+build6-0ubuntu0.16.04.1

Affected versions

41.*

41.0.2+build2-0ubuntu1

42.*

42.0+build2-0ubuntu1

44.*

44.0+build3-0ubuntu2
44.0.1+build1-0ubuntu1
44.0.2+build1-0ubuntu1

45.*

45.0+build2-0ubuntu1
45.0.1+build1-0ubuntu1
45.0.2+build1-0ubuntu1

46.*

46.0+build5-0ubuntu0.16.04.2
46.0.1+build1-0ubuntu0.16.04.2

47.*

47.0+build3-0ubuntu0.16.04.1

48.*

48.0+build2-0ubuntu0.16.04.1

49.*

49.0+build4-0ubuntu0.16.04.1
49.0.2+build2-0ubuntu0.16.04.2

50.*

50.0+build2-0ubuntu0.16.04.2
50.0.2+build1-0ubuntu0.16.04.1
50.1.0+build2-0ubuntu0.16.04.1

51.*

51.0.1+build2-0ubuntu0.16.04.1
51.0.1+build2-0ubuntu0.16.04.2

52.*

52.0+build2-0ubuntu0.16.04.1
52.0.1+build2-0ubuntu0.16.04.1
52.0.2+build1-0ubuntu0.16.04.1

53.*

53.0+build6-0ubuntu0.16.04.1
53.0.2+build1-0ubuntu0.16.04.2
53.0.3+build1-0ubuntu0.16.04.2

54.*

54.0+build3-0ubuntu0.16.04.1

55.*

55.0.1+build2-0ubuntu0.16.04.2
55.0.2+build1-0ubuntu0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "56.0+build6-0ubuntu0.16.04.1",
            "binary_name": "firefox"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.16.04.1",
            "binary_name": "firefox-dev"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.16.04.1",
            "binary_name": "firefox-globalmenu"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.16.04.1",
            "binary_name": "firefox-mozsymbols"
        },
        {
            "binary_version": "56.0+build6-0ubuntu0.16.04.1",
            "binary_name": "firefox-testsuite"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / firefox

Package

Name
firefox
Purl
pkg:deb/ubuntu/firefox@56.0+build6-0ubuntu1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
56.0+build6-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "56.0+build6-0ubuntu1",
            "binary_name": "firefox"
        },
        {
            "binary_version": "56.0+build6-0ubuntu1",
            "binary_name": "firefox-dev"
        },
        {
            "binary_version": "56.0+build6-0ubuntu1",
            "binary_name": "firefox-globalmenu"
        },
        {
            "binary_version": "56.0+build6-0ubuntu1",
            "binary_name": "firefox-mozsymbols"
        },
        {
            "binary_version": "56.0+build6-0ubuntu1",
            "binary_name": "firefox-testsuite"
        }
    ],
    "availability": "No subscription required"
}