CVE-2023-6857

See a problem?
Please try reporting it to the source first.
Source
https://nvd.nist.gov/vuln/detail/CVE-2023-6857
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-6857.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2023-6857
Downstream
Related
Published
2023-12-19T14:15:07Z
Modified
2025-07-01T15:22:09.992574Z
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
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

Debian:11 / firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
115.6.0esr-1~deb11u1

Affected versions

78.*

78.12.0esr-1
78.13.0esr-1~deb9u1
78.13.0esr-1~deb10u1
78.13.0esr-1~deb11u1
78.13.0esr-1
78.14.0esr-1~deb9u1
78.14.0esr-1~deb10u1
78.14.0esr-1~deb11u1
78.14.0esr-1
78.15.0esr-1~deb9u1
78.15.0esr-1~deb10u1
78.15.0esr-1~deb11u1

91.*

91.0esr-1
91.0.1esr-1
91.1.0esr-1
91.2.0esr-1
91.3.0esr-1
91.3.0esr-2
91.4.0esr-1
91.4.1esr-1~deb9u1
91.4.1esr-1~deb11u1
91.5.0esr-1~deb9u1
91.5.0esr-1~deb10u1
91.5.0esr-1~deb11u1
91.5.0esr-1
91.5.1esr-1
91.6.0esr-1~deb9u1
91.6.0esr-1~deb10u1
91.6.0esr-1~deb11u1
91.6.0esr-1
91.6.1esr-1~deb9u1
91.6.1esr-1~deb10u1
91.6.1esr-1~deb11u1
91.6.1esr-1
91.7.0esr-1~deb9u1
91.7.0esr-1~deb10u1
91.7.0esr-1~deb11u1
91.7.0esr-1
91.8.0esr-1~deb9u1
91.8.0esr-1~deb10u1
91.8.0esr-1~deb11u1
91.8.0esr-1
91.9.0esr-1~deb9u1
91.9.0esr-1~deb10u1
91.9.0esr-1~deb11u1
91.9.0esr-1
91.9.1esr-1~deb9u1
91.9.1esr-1~deb10u1
91.9.1esr-1~deb11u1
91.9.1esr-1
91.10.0esr-1~deb9u1
91.10.0esr-1~deb10u1
91.10.0esr-1~deb11u1
91.10.0esr-1
91.11.0esr-1~deb9u1
91.11.0esr-1~deb10u1
91.11.0esr-1~deb11u1
91.11.0esr-1
91.12.0esr-1~deb10u1
91.12.0esr-1~deb11u1
91.12.0esr-1
91.13.0esr-1~deb10u1
91.13.0esr-1~deb11u1

102.*

102.1.0esr-1
102.1.0esr-2
102.2.0esr-1
102.3.0esr-1~deb10u1
102.3.0esr-1~deb10u2
102.3.0esr-1~deb11u1
102.3.0esr-1
102.4.0esr-1~deb10u1
102.4.0esr-1~deb11u1
102.4.0esr-1
102.5.0esr-1~deb10u1
102.5.0esr-1~deb11u1
102.5.0esr-1
102.6.0esr-1~deb10u1
102.6.0esr-1~deb11u1
102.6.0esr-1
102.7.0esr-1~deb10u1
102.7.0esr-1~deb11u1
102.7.0esr-1
102.8.0esr-1~deb10u1
102.8.0esr-1~deb11u1
102.8.0esr-1
102.9.0esr-1~deb10u1
102.9.0esr-1~deb11u1
102.9.0esr-1
102.9.0esr-2
102.10.0esr-1~deb10u1
102.10.0esr-1~deb11u1
102.10.0esr-1
102.11.0esr-1~deb10u1
102.11.0esr-1~deb11u1
102.11.0esr-1
102.12.0esr-1~deb10u1
102.12.0esr-1~deb11u1
102.12.0esr-1~deb12u1
102.12.0esr-1
102.13.0esr-1~deb10u1
102.13.0esr-1~deb11u1
102.13.0esr-1~deb12u1
102.13.0esr-1
102.14.0esr-1~deb10u1
102.14.0esr-1~deb11u1
102.14.0esr-1~deb12u1
102.15.0esr-1~deb10u1
102.15.0esr-1~deb11u1
102.15.0esr-1~deb12u1
102.15.1esr-1~deb10u1
102.15.1esr-1~deb11u1
102.15.1esr-1~deb12u1

115.*

115.0.2esr-1
115.1.0esr-1
115.2.0esr-1
115.2.1esr-1
115.3.0esr-1~deb10u1
115.3.0esr-1~deb11u1
115.3.0esr-1~deb12u1
115.3.0esr-1
115.3.1esr-1~deb10u1
115.3.1esr-1~deb11u1
115.4.0esr-1~deb10u1
115.4.0esr-1~deb11u1
115.4.0esr-1~deb12u1
115.4.0esr-1
115.5.0esr-1~deb10u1
115.5.0esr-1~deb11u1
115.5.0esr-1~deb12u1
115.5.0esr-1
115.6.0esr-1~deb10u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
115.6.0esr-1~deb12u1

Affected versions

102.*

102.11.0esr-1
102.12.0esr-1~deb10u1
102.12.0esr-1~deb11u1
102.12.0esr-1~deb12u1
102.12.0esr-1
102.13.0esr-1~deb10u1
102.13.0esr-1~deb11u1
102.13.0esr-1~deb12u1
102.13.0esr-1
102.14.0esr-1~deb10u1
102.14.0esr-1~deb11u1
102.14.0esr-1~deb12u1
102.15.0esr-1~deb10u1
102.15.0esr-1~deb11u1
102.15.0esr-1~deb12u1
102.15.1esr-1~deb10u1
102.15.1esr-1~deb11u1
102.15.1esr-1~deb12u1

115.*

115.0.2esr-1
115.1.0esr-1
115.2.0esr-1
115.2.1esr-1
115.3.0esr-1~deb10u1
115.3.0esr-1~deb11u1
115.3.0esr-1~deb12u1
115.3.0esr-1
115.3.1esr-1~deb10u1
115.3.1esr-1~deb11u1
115.4.0esr-1~deb10u1
115.4.0esr-1~deb11u1
115.4.0esr-1~deb12u1
115.4.0esr-1
115.5.0esr-1~deb10u1
115.5.0esr-1~deb11u1
115.5.0esr-1~deb12u1
115.5.0esr-1
115.6.0esr-1~deb10u1
115.6.0esr-1~deb11u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / firefox-esr

Package

Name
firefox-esr
Purl
pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
115.6.0esr-1

Affected versions

102.*

102.11.0esr-1
102.12.0esr-1~deb10u1
102.12.0esr-1~deb11u1
102.12.0esr-1~deb12u1
102.12.0esr-1
102.13.0esr-1~deb10u1
102.13.0esr-1~deb11u1
102.13.0esr-1~deb12u1
102.13.0esr-1
102.14.0esr-1~deb10u1
102.14.0esr-1~deb11u1
102.14.0esr-1~deb12u1
102.15.0esr-1~deb10u1
102.15.0esr-1~deb11u1
102.15.0esr-1~deb12u1
102.15.1esr-1~deb10u1
102.15.1esr-1~deb11u1
102.15.1esr-1~deb12u1

115.*

115.0.2esr-1
115.1.0esr-1
115.2.0esr-1
115.2.1esr-1
115.3.0esr-1~deb10u1
115.3.0esr-1~deb11u1
115.3.0esr-1~deb12u1
115.3.0esr-1
115.3.1esr-1~deb10u1
115.3.1esr-1~deb11u1
115.4.0esr-1~deb10u1
115.4.0esr-1~deb11u1
115.4.0esr-1~deb12u1
115.4.0esr-1
115.5.0esr-1~deb10u1
115.5.0esr-1~deb11u1
115.5.0esr-1~deb12u1
115.5.0esr-1
115.6.0esr-1~deb10u1
115.6.0esr-1~deb11u1
115.6.0esr-1~deb12u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:11 / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:115.6.0-1~deb11u1

Affected versions

1:78.*

1:78.12.0-1
1:78.13.0-1~deb9u1
1:78.13.0-1~deb10u1
1:78.13.0-1~deb11u1
1:78.13.0-1
1:78.14.0-1~deb9u1
1:78.14.0-1~deb10u1
1:78.14.0-1~deb11u1
1:78.14.0-1

1:84.*

1:84.0~b3-1

1:85.*

1:85.0~b3-1

1:86.*

1:86.0~b3-1

1:88.*

1:88.0~b2-1

1:89.*

1:89.0~b2-1

1:90.*

1:90.0~b2-1

1:91.*

1:91.0~b1-1
1:91.0~b3-1
1:91.0~b5-1
1:91.0-1
1:91.0.2-1
1:91.1.0-1
1:91.1.1-1
1:91.2.0-1
1:91.2.1-1
1:91.3.0-1
1:91.3.2-1
1:91.4.0-1
1:91.4.1-1~deb9u1
1:91.4.1-1~deb10u1
1:91.4.1-1~deb11u1
1:91.4.1-1
1:91.5.0-1~deb9u1
1:91.5.0-1
1:91.5.0-2~deb10u1
1:91.5.0-2~deb11u1
1:91.5.0-2
1:91.5.1-1
1:91.6.0-1~deb9u1
1:91.6.0-1~deb10u1
1:91.6.0-1~deb11u1
1:91.6.0-1
1:91.6.1-1~deb9u1
1:91.6.1-1~deb10u1
1:91.6.1-1~deb11u1
1:91.6.1-1
1:91.6.2-1~deb9u1
1:91.6.2-1~deb10u1
1:91.6.2-1~deb11u1
1:91.6.2-1
1:91.7.0-1
1:91.7.0-2~deb9u1
1:91.7.0-2~deb10u1
1:91.7.0-2~deb11u1
1:91.7.0-2
1:91.8.0-1~deb9u1
1:91.8.0-1~deb10u1
1:91.8.0-1~deb11u1
1:91.8.0-1
1:91.8.1-1
1:91.9.0-1~deb9u1
1:91.9.0-1~deb10u1
1:91.9.0-1~deb11u1
1:91.9.0-1
1:91.10.0-1~deb9u1
1:91.10.0-1~deb10u1
1:91.10.0-1~deb11u1
1:91.10.0-1
1:91.11.0-1~deb10u1
1:91.11.0-1~deb11u1
1:91.11.0-1
1:91.12.0-1~deb10u1
1:91.12.0-1~deb11u1
1:91.13.0-1~deb10u1
1:91.13.0-1~deb11u1

1:102.*

1:102.0~b4-1
1:102.0~b7-1
1:102.0.1-1
1:102.0.2-1
1:102.1.0-1
1:102.1.1-1
1:102.1.2-1
1:102.2.0-1
1:102.2.1-1
1:102.2.2-1
1:102.3.0-1~deb10u1
1:102.3.0-1~deb11u1
1:102.3.0-1
1:102.3.1-1
1:102.3.2-1
1:102.3.3-1
1:102.4.0-1~deb10u1
1:102.4.0-1~deb11u1
1:102.4.0-1
1:102.4.1-1
1:102.5.0-1~deb10u1
1:102.5.0-1~deb11u1
1:102.5.0-1
1:102.5.1-1
1:102.6.0-1~deb10u1
1:102.6.0-1~deb11u1
1:102.6.0-1
1:102.7.1-1
1:102.7.1+1-1
1:102.7.2-1
1:102.8.0-1~deb10u1
1:102.8.0-1~deb11u1
1:102.8.0-1
1:102.9.0-1~deb10u1
1:102.9.0-1~deb11u1
1:102.9.0-1
1:102.9.1-1
1:102.10.0-1~deb10u1
1:102.10.0-1~deb11u1
1:102.10.0-1
1:102.11.0-1~deb10u1
1:102.11.0-1~deb11u1
1:102.11.0-1
1:102.12.0-1~deb10u1
1:102.12.0-1~deb11u1
1:102.12.0-1~deb12u1
1:102.12.0-1
1:102.13.0-1~deb10u1
1:102.13.0-1~deb11u1
1:102.13.0-1~deb12u1
1:102.13.0-1
1:102.13.1-1~deb10u1
1:102.13.1-1~deb11u1
1:102.13.1-1~deb12u1
1:102.13.1-1
1:102.14.0-1~deb10u1
1:102.14.0-1~deb11u1
1:102.14.0-1~deb12u1
1:102.15.0-1~deb10u1
1:102.15.0-1~deb11u1
1:102.15.0-1~deb12u1
1:102.15.1-1~deb10u1
1:102.15.1-1~deb11u1
1:102.15.1-1~deb12u1

1:103.*

1:103.0~b5-1

1:104.*

1:104.0~b2-1

1:110.*

1:110.0~b4-1

1:112.*

1:112.0~b1-1

1:113.*

1:113.0~b3-1

1:114.*

1:114.0~b2-1

1:115.*

1:115.0~b4-1
1:115.0~b6-1
1:115.0-1
1:115.0.1-1
1:115.0.1-2
1:115.1.0-1
1:115.1.1-1
1:115.2.0-1
1:115.2.2-1
1:115.3.0-1~deb12u1
1:115.3.0-1
1:115.3.1-1~deb10u1
1:115.3.1-1~deb11u1
1:115.3.1-1~deb12u1
1:115.3.1-1
1:115.4.1-1~deb10u1
1:115.4.1-1~deb11u1
1:115.4.1-1~deb12u1
1:115.4.1-1
1:115.5.0-1~deb10u1
1:115.5.0-1~deb11u1
1:115.5.0-1~deb12u1
1:115.5.0-1
1:115.5.1-1
1:115.5.2-1
1:115.6.0-1~deb10u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:115.6.0-1~deb12u1

Affected versions

1:102.*

1:102.11.0-1
1:102.12.0-1~deb10u1
1:102.12.0-1~deb11u1
1:102.12.0-1~deb12u1
1:102.12.0-1
1:102.13.0-1~deb10u1
1:102.13.0-1~deb11u1
1:102.13.0-1~deb12u1
1:102.13.0-1
1:102.13.1-1~deb10u1
1:102.13.1-1~deb11u1
1:102.13.1-1~deb12u1
1:102.13.1-1
1:102.14.0-1~deb10u1
1:102.14.0-1~deb11u1
1:102.14.0-1~deb12u1
1:102.15.0-1~deb10u1
1:102.15.0-1~deb11u1
1:102.15.0-1~deb12u1
1:102.15.1-1~deb10u1
1:102.15.1-1~deb11u1
1:102.15.1-1~deb12u1

1:103.*

1:103.0~b5-1

1:104.*

1:104.0~b2-1

1:110.*

1:110.0~b4-1

1:112.*

1:112.0~b1-1

1:113.*

1:113.0~b3-1

1:114.*

1:114.0~b2-1

1:115.*

1:115.0~b4-1
1:115.0~b6-1
1:115.0-1
1:115.0.1-1
1:115.0.1-2
1:115.1.0-1
1:115.1.1-1
1:115.2.0-1
1:115.2.2-1
1:115.3.0-1~deb12u1
1:115.3.0-1
1:115.3.1-1~deb10u1
1:115.3.1-1~deb11u1
1:115.3.1-1~deb12u1
1:115.3.1-1
1:115.4.1-1~deb10u1
1:115.4.1-1~deb11u1
1:115.4.1-1~deb12u1
1:115.4.1-1
1:115.5.0-1~deb10u1
1:115.5.0-1~deb11u1
1:115.5.0-1~deb12u1
1:115.5.0-1
1:115.5.1-1
1:115.5.2-1
1:115.6.0-1~deb10u1
1:115.6.0-1~deb11u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / thunderbird

Package

Name
thunderbird
Purl
pkg:deb/debian/thunderbird?arch=source

Affected ranges

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

Affected versions

1:102.*

1:102.11.0-1
1:102.12.0-1~deb10u1
1:102.12.0-1~deb11u1
1:102.12.0-1~deb12u1
1:102.12.0-1
1:102.13.0-1~deb10u1
1:102.13.0-1~deb11u1
1:102.13.0-1~deb12u1
1:102.13.0-1
1:102.13.1-1~deb10u1
1:102.13.1-1~deb11u1
1:102.13.1-1~deb12u1
1:102.13.1-1
1:102.14.0-1~deb10u1
1:102.14.0-1~deb11u1
1:102.14.0-1~deb12u1
1:102.15.0-1~deb10u1
1:102.15.0-1~deb11u1
1:102.15.0-1~deb12u1
1:102.15.1-1~deb10u1
1:102.15.1-1~deb11u1
1:102.15.1-1~deb12u1

1:103.*

1:103.0~b5-1

1:104.*

1:104.0~b2-1

1:110.*

1:110.0~b4-1

1:112.*

1:112.0~b1-1

1:113.*

1:113.0~b3-1

1:114.*

1:114.0~b2-1

1:115.*

1:115.0~b4-1
1:115.0~b6-1
1:115.0-1
1:115.0.1-1
1:115.0.1-2
1:115.1.0-1
1:115.1.1-1
1:115.2.0-1
1:115.2.2-1
1:115.3.0-1~deb12u1
1:115.3.0-1
1:115.3.1-1~deb10u1
1:115.3.1-1~deb11u1
1:115.3.1-1~deb12u1
1:115.3.1-1
1:115.4.1-1~deb10u1
1:115.4.1-1~deb11u1
1:115.4.1-1~deb12u1
1:115.4.1-1
1:115.5.0-1~deb10u1
1:115.5.0-1~deb11u1
1:115.5.0-1~deb12u1
1:115.5.0-1
1:115.5.1-1
1:115.5.2-1
1:115.6.0-1~deb10u1
1:115.6.0-1~deb11u1
1:115.6.0-1~deb12u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}