UBUNTU-CVE-2023-6857

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Source
https://ubuntu.com/security/CVE-2023-6857
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-6857.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2023-6857
Upstream
Downstream
Related
Published
2023-12-20T00:00:00Z
Modified
2025-09-08T16:56:01Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

When resolving a symlink, a race may occur where the buffer passed to readlink may actually be smaller than necessary. This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected. This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

References

Affected packages

Ubuntu:20.04:LTS

firefox

Package

Name
firefox
Purl
pkg:deb/ubuntu/firefox@121.0+build1-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
121.0+build1-0ubuntu0.20.04.1

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

91.*

91.0+build2-0ubuntu0.20.04.1
91.0.1+build1-0ubuntu0.20.04.1
91.0.2+build1-0ubuntu0.20.04.1

92.*

92.0+build3-0ubuntu0.20.04.1

93.*

93.0+build1-0ubuntu0.20.04.1

94.*

94.0+build3-0ubuntu0.20.04.1

95.*

95.0+build1-0ubuntu0.20.04.1
95.0.1+build2-0ubuntu0.20.04.1

96.*

96.0+build2-0ubuntu0.20.04.1

97.*

97.0+build2-0ubuntu0.20.04.1
97.0.2+build1-0ubuntu0.20.04.1

98.*

98.0+build3-0ubuntu0.20.04.2
98.0.1+build2-0ubuntu0.20.04.1
98.0.2+build1-0ubuntu0.20.04.1

99.*

99.0+build2-0ubuntu0.20.04.2

100.*

100.0+build2-0ubuntu0.20.04.1
100.0.2+build1-0ubuntu0.20.04.1

101.*

101.0.1+build1-0ubuntu0.20.04.1

102.*

102.0+build2-0ubuntu0.20.04.1

103.*

103.0+build1-0ubuntu0.20.04.1

104.*

104.0+build3-0ubuntu0.20.04.1

105.*

105.0+build2-0ubuntu0.20.04.1

106.*

106.0.2+build1-0ubuntu0.20.04.1
106.0.5+build1-0ubuntu0.20.04.1

107.*

107.0+build2-0ubuntu0.20.04.1

108.*

108.0+build2-0ubuntu0.20.04.1
108.0.1+build1-0ubuntu0.20.04.1
108.0.2+build1-0ubuntu0.20.04.1

109.*

109.0+build2-0ubuntu0.20.04.1
109.0.1+build1-0ubuntu0.20.04.2

110.*

110.0+build3-0ubuntu0.20.04.1
110.0.1+build2-0ubuntu0.20.04.1

111.*

111.0+build2-0ubuntu0.20.04.1
111.0.1+build2-0ubuntu0.20.04.1

112.*

112.0+build2-0ubuntu0.20.04.1
112.0.1+build1-0ubuntu0.20.04.1
112.0.2+build1-0ubuntu0.20.04.1

113.*

113.0+build2-0ubuntu0.20.04.1
113.0.1+build1-0ubuntu0.20.04.1
113.0.2+build1-0ubuntu0.20.04.1

114.*

114.0+build3-0ubuntu0.20.04.1
114.0.1+build1-0ubuntu0.20.04.1
114.0.2+build1-0ubuntu0.20.04.1

115.*

115.0+build2-0ubuntu0.20.04.3
115.0.2+build1-0ubuntu0.20.04.1

116.*

116.0+build2-0ubuntu0.20.04.2
116.0.2+build1-0ubuntu0.20.04.1
116.0.3+build2-0ubuntu0.20.04.1

117.*

117.0+build2-0ubuntu0.20.04.1
117.0.1+build2-0ubuntu0.20.04.1

118.*

118.0.1+build1-0ubuntu0.20.04.1
118.0.2+build2-0ubuntu0.20.04.1

119.*

119.0+build2-0ubuntu0.20.04.1
119.0.1+build1-0ubuntu0.20.04.1

120.*

120.0+build2-0ubuntu0.20.04.1
120.0.1+build1-0ubuntu0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "121.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox"
        },
        {
            "binary_version": "121.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox-dev"
        },
        {
            "binary_version": "121.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox-geckodriver"
        },
        {
            "binary_version": "121.0+build1-0ubuntu0.20.04.1",
            "binary_name": "firefox-mozsymbols"
        }
    ],
    "availability": "No subscription required"
}

thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:115.6.0+build2-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:115.6.0+build2-0ubuntu0.20.04.1

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

1:91.*

1:91.5.0+build1-0ubuntu0.20.04.1
1:91.7.0+build2-0ubuntu0.20.04.1
1:91.8.1+build1-0ubuntu0.20.04.1
1:91.9.1+build1-0ubuntu0.20.04.1
1:91.11.0+build2-0ubuntu0.20.04.1

1:102.*

1:102.2.2+build1-0ubuntu0.20.04.1
1:102.4.2+build2-0ubuntu0.20.04.1
1:102.7.1+build2-0ubuntu0.20.04.1
1:102.8.0+build2-0ubuntu0.20.04.1
1:102.9.0+build1-0ubuntu0.20.04.1
1:102.10.0+build2-0ubuntu0.20.04.1
1:102.11.0+build1-0ubuntu0.20.04.1
1:102.13.0+build1-0ubuntu0.20.04.1
1:102.15.0+build1-0ubuntu0.20.04.1
1:102.15.1+build1-0ubuntu0.20.04.1

1:115.*

1:115.3.1+build1-0ubuntu0.20.04.1
1:115.4.1+build1-0ubuntu0.20.04.1
1:115.5.0+build1-0ubuntu0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.20.04.1",
            "binary_name": "thunderbird"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.20.04.1",
            "binary_name": "thunderbird-dev"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.20.04.1",
            "binary_name": "thunderbird-gnome-support"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.20.04.1",
            "binary_name": "thunderbird-mozsymbols"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.20.04.1",
            "binary_name": "xul-ext-calendar-timezones"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.20.04.1",
            "binary_name": "xul-ext-gdata-provider"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.20.04.1",
            "binary_name": "xul-ext-lightning"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:22.04:LTS

mozjs102

Package

Name
mozjs102
Purl
pkg:deb/ubuntu/mozjs102@102.15.1-0ubuntu0.22.04.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

102.*

102.11.0-0ubuntu0.22.04.1
102.12.0-0ubuntu0.22.04.1
102.13.0-0ubuntu0.22.04.1
102.15.1-0ubuntu0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "102.15.1-0ubuntu0.22.04.1",
            "binary_name": "libmozjs-102-0"
        },
        {
            "binary_version": "102.15.1-0ubuntu0.22.04.1",
            "binary_name": "libmozjs-102-dev"
        }
    ]
}

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

mozjs91

Package

Name
mozjs91
Purl
pkg:deb/ubuntu/mozjs91@91.10.0-0ubuntu1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

91.*

91.5.1-0ubuntu1
91.6.0-1
91.6.0-2
91.7.0-2
91.10.0-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "91.10.0-0ubuntu1",
            "binary_name": "libmozjs-91-0"
        },
        {
            "binary_version": "91.10.0-0ubuntu1",
            "binary_name": "libmozjs-91-dev"
        }
    ]
}

thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:115.6.0+build2-0ubuntu0.22.04.1?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:115.6.0+build2-0ubuntu0.22.04.1

Affected versions

1:91.*

1:91.1.2+build1-0ubuntu1
1:91.3.0+build2-0ubuntu1
1:91.3.1+build1-0ubuntu1
1:91.3.2+build1-0ubuntu1
1:91.4.0+build1.1-0ubuntu1
1:91.4.0+build2-0ubuntu1
1:91.5.0+build1-0ubuntu1
1:91.5.1+build1-0ubuntu1
1:91.6.1+build1-0ubuntu1
1:91.7.0+build1-0ubuntu1
1:91.7.0+build2-0ubuntu1
1:91.8.0+build2-0ubuntu1
1:91.9.1+build1-0ubuntu0.22.04.1
1:91.11.0+build2-0ubuntu0.22.04.1

1:102.*

1:102.2.2+build1-0ubuntu0.22.04.1
1:102.4.2+build2-0ubuntu0.22.04.1
1:102.7.1+build2-0ubuntu0.22.04.1
1:102.8.0+build2-0ubuntu0.22.04.1
1:102.9.0+build1-0ubuntu0.22.04.1
1:102.10.0+build2-0ubuntu0.22.04.1
1:102.11.0+build1-0ubuntu0.22.04.1
1:102.13.0+build1-0ubuntu0.22.04.1
1:102.15.0+build1-0ubuntu0.22.04.1
1:102.15.1+build1-0ubuntu0.22.04.1

1:115.*

1:115.3.1+build1-0ubuntu0.22.04.2
1:115.4.1+build1-0ubuntu0.22.04.1
1:115.5.0+build1-0ubuntu0.22.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.22.04.1",
            "binary_name": "thunderbird"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.22.04.1",
            "binary_name": "thunderbird-dev"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.22.04.1",
            "binary_name": "thunderbird-gnome-support"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.22.04.1",
            "binary_name": "thunderbird-mozsymbols"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.22.04.1",
            "binary_name": "xul-ext-calendar-timezones"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.22.04.1",
            "binary_name": "xul-ext-gdata-provider"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu0.22.04.1",
            "binary_name": "xul-ext-lightning"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:24.04:LTS

mozjs102

Package

Name
mozjs102
Purl
pkg:deb/ubuntu/mozjs102@102.15.1-3ubuntu2?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

102.*

102.15.1-1
102.15.1-3ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "102.15.1-3ubuntu2",
            "binary_name": "libmozjs-102-0t64"
        },
        {
            "binary_version": "102.15.1-3ubuntu2",
            "binary_name": "libmozjs-102-dev"
        }
    ]
}

thunderbird

Package

Name
thunderbird
Purl
pkg:deb/ubuntu/thunderbird@1:115.6.0+build2-0ubuntu1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:115.6.0+build2-0ubuntu1

Affected versions

1:115.*

1:115.3.1+build1-0ubuntu1
1:115.4.1+build1-0ubuntu1
1:115.4.3+build1-0ubuntu1
1:115.5.0+build1-0ubuntu1
1:115.5.1+build1-0ubuntu1
1:115.5.2+build2-0ubuntu1
1:115.6.0+build1-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:115.6.0+build2-0ubuntu1",
            "binary_name": "thunderbird"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu1",
            "binary_name": "thunderbird-dev"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu1",
            "binary_name": "thunderbird-gnome-support"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu1",
            "binary_name": "thunderbird-mozsymbols"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu1",
            "binary_name": "xul-ext-calendar-timezones"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu1",
            "binary_name": "xul-ext-gdata-provider"
        },
        {
            "binary_version": "1:115.6.0+build2-0ubuntu1",
            "binary_name": "xul-ext-lightning"
        }
    ],
    "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_version": "52.9.1-0ubuntu0.18.04.1",
            "binary_name": "libmozjs-52-0"
        },
        {
            "binary_version": "52.9.1-0ubuntu0.18.04.1",
            "binary_name": "libmozjs-52-dev"
        }
    ]
}

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

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

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