UBUNTU-CVE-2021-29987

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Source

https://ubuntu.com/security/CVE-2021-29987

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-29987.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-29987

Upstream

CVE-2021-29987

Downstream

USN-5037-1

USN-5248-1

Related

Published

2021-08-11T00:00:00Z

Modified

2025-09-08T16:47:07Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be displayed in a different position but still record a click in the default location, making it possible to trick a user into accepting a permission they did not want to. This bug only affects Firefox on Linux. Other operating systems are unaffected.. This vulnerability affects Firefox < 91 and Thunderbird < 91.

References

Affected packages

Ubuntu:18.04:LTS / firefox

Package

Name: firefox
Purl: pkg:deb/ubuntu/firefox@91.0+build2-0ubuntu0.18.04.1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

91.0+build2-0ubuntu0.18.04.1

Affected versions

56.*

56.0+build6-0ubuntu1

57.*

57.0.1+build2-0ubuntu1

59.*

59.0.1+build1-0ubuntu1

59.0.2+build1-0ubuntu1

60.*

60.0+build2-0ubuntu1

60.0.1+build2-0ubuntu0.18.04.1

60.0.2+build1-0ubuntu0.18.04.1

61.*

61.0+build3-0ubuntu0.18.04.1

61.0.1+build1-0ubuntu0.18.04.1

62.*

62.0+build2-0ubuntu0.18.04.3

62.0+build2-0ubuntu0.18.04.4

62.0+build2-0ubuntu0.18.04.5

62.0.3+build1-0ubuntu0.18.04.1

63.*

63.0+build2-0ubuntu0.18.04.2

63.0.3+build1-0ubuntu0.18.04.1

64.*

64.0+build3-0ubuntu0.18.04.1

65.*

65.0+build2-0ubuntu0.18.04.1

65.0.1+build2-0ubuntu0.18.04.1

66.*

66.0+build3-0ubuntu0.18.04.1

66.0.1+build1-0ubuntu0.18.04.1

66.0.2+build1-0ubuntu0.18.04.1

66.0.3+build1-0ubuntu0.18.04.1

66.0.4+build3-0ubuntu0.18.04.1

66.0.5+build1-0ubuntu0.18.04.1

67.*

67.0+build2-0ubuntu0.18.04.1

67.0.1+build1-0ubuntu0.18.04.1

67.0.2+build2-0ubuntu0.18.04.1

67.0.3+build1-0ubuntu0.18.04.1

67.0.4+build1-0ubuntu0.18.04.1

68.*

68.0+build3-0ubuntu0.18.04.1

68.0.1+build1-0ubuntu0.18.04.1

68.0.2+build1-0ubuntu0.18.04.1

69.*

69.0+build2-0ubuntu0.18.04.1

69.0.1+build1-0ubuntu0.18.04.1

69.0.2+build1-0ubuntu0.18.04.1

70.*

70.0+build2-0ubuntu0.18.04.1

70.0.1+build1-0ubuntu0.18.04.1

71.*

71.0+build5-0ubuntu0.18.04.1

72.*

72.0.1+build1-0ubuntu0.18.04.1

72.0.2+build1-0ubuntu0.18.04.1

73.*

73.0+build3-0ubuntu0.18.04.1

73.0.1+build1-0ubuntu0.18.04.1

74.*

74.0+build3-0ubuntu0.18.04.1

74.0.1+build1-0ubuntu0.18.04.1

75.*

75.0+build3-0ubuntu0.18.04.1

76.*

76.0+build2-0ubuntu0.18.04.1

76.0.1+build1-0ubuntu0.18.04.1

77.*

77.0.1+build1-0ubuntu0.18.04.1

78.*

78.0.1+build1-0ubuntu0.18.04.1

78.0.2+build2-0ubuntu0.18.04.1

79.*

79.0+build1-0ubuntu0.18.04.1

80.*

80.0+build2-0ubuntu0.18.04.1

80.0.1+build1-0ubuntu0.18.04.1

81.*

81.0+build2-0ubuntu0.18.04.1

81.0.2+build1-0ubuntu0.18.04.1

82.*

82.0+build2-0ubuntu0.18.04.1

82.0.2+build1-0ubuntu0.18.04.1

82.0.3+build1-0ubuntu0.18.04.1

83.*

83.0+build2-0ubuntu0.18.04.2

84.*

84.0+build3-0ubuntu0.18.04.1

84.0.1+build1-0ubuntu0.18.04.1

84.0.2+build1-0ubuntu0.18.04.1

85.*

85.0+build1-0ubuntu0.18.04.1

85.0.1+build1-0ubuntu0.18.04.1

86.*

86.0+build3-0ubuntu0.18.04.1

86.0.1+build1-0ubuntu0.18.04.1

87.*

87.0+build3-0ubuntu0.18.04.2

88.*

88.0+build2-0ubuntu0.18.04.2

88.0.1+build1-0ubuntu0.18.04.2

89.*

89.0+build2-0ubuntu0.18.04.2

89.0.1+build1-0ubuntu0.18.04.1

89.0.2+build1-0ubuntu0.18.04.1

90.*

90.0+build1-0ubuntu0.18.04.1

90.0.2+build1-0ubuntu0.18.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "firefox",
            "binary_version": "91.0+build2-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "firefox-dev",
            "binary_version": "91.0+build2-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "firefox-geckodriver",
            "binary_version": "91.0+build2-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "firefox-mozsymbols",
            "binary_version": "91.0+build2-0ubuntu0.18.04.1"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:18.04:LTS / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/ubuntu/thunderbird@1:91.5.0+build1-0ubuntu0.18.04.1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:91.5.0+build1-0ubuntu0.18.04.1

Affected versions

1:52.*

1:52.4.0+build1-0ubuntu2

1:52.6.0+build1-0ubuntu1

1:52.7.0+build1-0ubuntu1

1:52.8.0+build1-0ubuntu0.18.04.1

1:52.9.1+build3-0ubuntu0.18.04.1

1:60.*

1:60.2.1+build1-0ubuntu0.18.04.2

1:60.4.0+build2-0ubuntu0.18.04.1

1:60.5.1+build2-0ubuntu0.18.04.1

1:60.6.1+build2-0ubuntu0.18.04.1

1:60.7.0+build1-0ubuntu0.18.04.1

1:60.7.1+build1-0ubuntu0.18.04.1

1:60.7.2+build2-0ubuntu0.18.04.1

1:60.8.0+build1-0ubuntu0.18.04.1

1:60.9.0+build1-0ubuntu0.18.04.1

1:68.*

1:68.2.1+build1-0ubuntu0.18.04.1

1:68.2.2+build1-0ubuntu0.18.04.1

1:68.4.1+build1-0ubuntu0.18.04.1

1:68.7.0+build1-0ubuntu0.18.04.1

1:68.8.0+build2-0ubuntu0.18.04.2

1:68.10.0+build1-0ubuntu0.18.04.1

1:78.*

1:78.8.1+build1-0ubuntu0.18.04.1

1:78.11.0+build1-0ubuntu0.18.04.2

1:78.13.0+build1-0ubuntu0.18.04.1

1:78.14.0+build1-0ubuntu0.18.04.1

1:78.14.0+build1-0ubuntu0.18.04.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "thunderbird",
            "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "thunderbird-dev",
            "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:91.5.0+build1-0ubuntu0.18.04.1"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:18.04:LTS / mozjs52

Package

Name: mozjs52
Purl: pkg:deb/ubuntu/mozjs52@52.9.1-0ubuntu0.18.04.1?arch=source&distro=esm-infra/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

52.*

52.3.1-0ubuntu3

52.3.1-7fakesync1

52.8.1-0ubuntu0.18.04.1

52.9.1-0ubuntu0.18.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libmozjs-52-0",
            "binary_version": "52.9.1-0ubuntu0.18.04.1"
        },
        {
            "binary_name": "libmozjs-52-dev",
            "binary_version": "52.9.1-0ubuntu0.18.04.1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / mozjs38

Package

Name: mozjs38
Purl: pkg:deb/ubuntu/mozjs38@38.8.0~repack1-0ubuntu4?arch=source&distro=esm-apps/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

38.*

38.8.0~repack1-0ubuntu1

38.8.0~repack1-0ubuntu3

38.8.0~repack1-0ubuntu4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libmozjs-38-0",
            "binary_version": "38.8.0~repack1-0ubuntu4"
        },
        {
            "binary_name": "libmozjs-38-dev",
            "binary_version": "38.8.0~repack1-0ubuntu4"
        }
    ]
}

Ubuntu:20.04:LTS / firefox

Package

Name: firefox
Purl: pkg:deb/ubuntu/firefox@91.0+build2-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

91.0+build2-0ubuntu0.20.04.1

Affected versions

69.*

69.0.3+build1-0ubuntu1

70.*

70.0+build2-0ubuntu1

70.0+build2-0ubuntu2

70.0.1+build1-0ubuntu2

71.*

71.0+build2-0ubuntu2

71.0+build5-0ubuntu1

72.*

72.0.1+build1-0ubuntu1

72.0.2+build1-0ubuntu1

73.*

73.0+build1-0ubuntu1

73.0+build2-0ubuntu1

73.0+build3-0ubuntu1

73.0.1+build1-0ubuntu1

74.*

74.0+build1-0ubuntu1

74.0+build2-0ubuntu1

74.0+build2-0ubuntu2

74.0+build3-0ubuntu1

75.*

75.0+build3-0ubuntu1

76.*

76.0+build2-0ubuntu0.20.04.1

76.0.1+build1-0ubuntu0.20.04.1

77.*

77.0.1+build1-0ubuntu0.20.04.1

78.*

78.0.1+build1-0ubuntu0.20.04.1

78.0.2+build2-0ubuntu0.20.04.1

79.*

79.0+build1-0ubuntu0.20.04.1

80.*

80.0+build2-0ubuntu0.20.04.1

80.0.1+build1-0ubuntu0.20.04.1

81.*

81.0+build2-0ubuntu0.20.04.1

81.0.2+build1-0ubuntu0.20.04.1

82.*

82.0+build2-0ubuntu0.20.04.1

82.0.2+build1-0ubuntu0.20.04.1

82.0.3+build1-0ubuntu0.20.04.1

83.*

83.0+build2-0ubuntu0.20.04.1

84.*

84.0+build3-0ubuntu0.20.04.1

84.0.1+build1-0ubuntu0.20.04.1

84.0.2+build1-0ubuntu0.20.04.1

85.*

85.0+build1-0ubuntu0.20.04.1

85.0.1+build1-0ubuntu0.20.04.1

86.*

86.0+build3-0ubuntu0.20.04.1

86.0.1+build1-0ubuntu0.20.04.1

87.*

87.0+build3-0ubuntu0.20.04.2

88.*

88.0+build2-0ubuntu0.20.04.1

88.0.1+build1-0ubuntu0.20.04.2

89.*

89.0+build2-0ubuntu0.20.04.2

89.0.1+build1-0ubuntu0.20.04.1

89.0.2+build1-0ubuntu0.20.04.1

90.*

90.0+build1-0ubuntu0.20.04.1

90.0.2+build1-0ubuntu0.20.04.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "firefox",
            "binary_version": "91.0+build2-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "firefox-dev",
            "binary_version": "91.0+build2-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "firefox-geckodriver",
            "binary_version": "91.0+build2-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "firefox-mozsymbols",
            "binary_version": "91.0+build2-0ubuntu0.20.04.1"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/ubuntu/thunderbird@1:91.5.0+build1-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:91.5.0+build1-0ubuntu0.20.04.1

Affected versions

1:68.*

1:68.1.2+build1-0ubuntu1

1:68.1.2+build1-0ubuntu2

1:68.2.1+build1-0ubuntu1

1:68.2.2+build1-0ubuntu1

1:68.3.0+build2-0ubuntu1

1:68.3.1+build1-0ubuntu2

1:68.4.1+build1-0ubuntu1

1:68.4.2+build2-0ubuntu1

1:68.5.0+build1-0ubuntu1

1:68.6.0+build2-0ubuntu1

1:68.7.0+build1-0ubuntu1

1:68.7.0+build1-0ubuntu2

1:68.8.0+build2-0ubuntu0.20.04.2

1:68.10.0+build1-0ubuntu0.20.04.1

1:78.*

1:78.7.1+build1-0ubuntu0.20.04.1

1:78.8.1+build1-0ubuntu0.20.04.1

1:78.11.0+build1-0ubuntu0.20.04.2

1:78.13.0+build1-0ubuntu0.20.04.2

1:78.14.0+build1-0ubuntu0.20.04.1

1:78.14.0+build1-0ubuntu0.20.04.2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "thunderbird",
            "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "thunderbird-dev",
            "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "thunderbird-gnome-support",
            "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "thunderbird-mozsymbols",
            "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "xul-ext-calendar-timezones",
            "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "xul-ext-gdata-provider",
            "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1"
        },
        {
            "binary_name": "xul-ext-lightning",
            "binary_version": "1:91.5.0+build1-0ubuntu0.20.04.1"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:Pro:20.04:LTS / mozjs68

Package

Name: mozjs68
Purl: pkg:deb/ubuntu/mozjs68@68.6.0-1ubuntu1?arch=source&distro=esm-infra/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

68.*

68.5.0-1~fakesync

68.5.0-2~fakesync

68.6.0-1

68.6.0-1ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libmozjs-68-0",
            "binary_version": "68.6.0-1ubuntu1"
        },
        {
            "binary_name": "libmozjs-68-dev",
            "binary_version": "68.6.0-1ubuntu1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / mozjs52

Package

Name: mozjs52
Purl: pkg:deb/ubuntu/mozjs52@52.9.1-1ubuntu3?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

52.*

52.9.1-1build1

52.9.1-1ubuntu3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libmozjs-52-0",
            "binary_version": "52.9.1-1ubuntu3"
        },
        {
            "binary_name": "libmozjs-52-dev",
            "binary_version": "52.9.1-1ubuntu3"
        }
    ]
}

Ubuntu:22.04:LTS / mozjs78

Package

Name: mozjs78
Purl: pkg:deb/ubuntu/mozjs78@78.15.0-4ubuntu1?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

78.*

78.13.0-1

78.15.0-2

78.15.0-4ubuntu1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libmozjs-78-0",
            "binary_version": "78.15.0-4ubuntu1"
        },
        {
            "binary_name": "libmozjs-78-dev",
            "binary_version": "78.15.0-4ubuntu1"
        }
    ]
}