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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2024-34078
HistoryMay 06, 2024 - 3:15 p.m.

CVE-2024-34078

2024-05-0615:15:24
Debian Security Bug Tracker
security-tracker.debian.org
5
html-sanitizer
allowlist-based
html cleaner
unicode
nfkc
chevrons
sanitization
fixed
2.4.2

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

6.9 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

html-sanitizer is an allowlist-based HTML cleaner. If using keep_typographic_whitespace=False (which is the default), the sanitizer normalizes unicode to the NFKC form at the end. Some unicode characters normalize to chevrons; this allows specially crafted HTML to escape sanitization. The problem has been fixed in 2.4.2.

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

6.9 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.0%

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