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Debian Security Bug TrackerDEBIANCVE:CVE-2023-6857HistoryDec 19, 2023 - 2:15 p.m.
CVE-2023-6857
2023-12-1914:15:07
Debian Security Bug Tracker
security-tracker.debian.org
10
symlink race
firefox
unix
vulnerability
esr 115.6
thunderbird
firefox 121
unix-based
CVSS3
5.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
AI Score
5.9
Confidence
High
EPSS
0.001
Percentile
43.3%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 999 | all | firefox | < 121.0-1 | firefox_121.0-1_all.deb |
| Debian | 12 | all | firefox-esr | < 115.6.0esr-1~deb12u1 | firefox-esr_115.6.0esr-1~deb12u1_all.deb |
| Debian | 11 | all | firefox-esr | < 115.6.0esr-1~deb11u1 | firefox-esr_115.6.0esr-1~deb11u1_all.deb |
| Debian | 999 | all | firefox-esr | < 115.6.0esr-1 | firefox-esr_115.6.0esr-1_all.deb |
| Debian | 13 | all | firefox-esr | < 115.6.0esr-1 | firefox-esr_115.6.0esr-1_all.deb |
| Debian | 12 | all | thunderbird | < 1:115.6.0-1~deb12u1 | thunderbird_1:115.6.0-1~deb12u1_all.deb |
| Debian | 11 | all | thunderbird | < 1:115.6.0-1~deb11u1 | thunderbird_1:115.6.0-1~deb11u1_all.deb |
| Debian | 999 | all | thunderbird | < 1:115.6.0-1 | thunderbird_1:115.6.0-1_all.deb |
| Debian | 13 | all | thunderbird | < 1:115.6.0-1 | thunderbird_1:115.6.0-1_all.deb |
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CVSS3
5.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
AI Score
5.9
Confidence
High
EPSS
0.001
Percentile
43.3%
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