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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2023-5173
HistorySep 27, 2023 - 3:19 p.m.

CVE-2023-5173

2023-09-2715:19:42
Debian Security Bug Tracker
security-tracker.debian.org
11
firefox
integer overflow
network traffic
out-of-bounds write
privileged process
non-https
alternate services
vulnerability
unix

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

6.9 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

21.3%

In a non-standard configuration of Firefox, an integer overflow could have occurred based on network traffic (possibly under influence of a local unprivileged webpage), leading to an out-of-bounds write to privileged process memory. This bug only affects Firefox if a non-standard preference allowing non-HTTPS Alternate Services (network.http.altsvc.oe) is enabled. This vulnerability affects Firefox < 118.

OSVersionArchitecturePackageVersionFilename
Debian999allfirefox< 118.0-1firefox_118.0-1_all.deb

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

6.9 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

21.3%