CVE-2023-52081

Katalog CVE

CVSS 5.3 · Medium EPSS 0,52%

Kerentanan Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') pada ewen-lbh firefox css. Skor CVSS 3.1 5.3 (Medium) menurut NVD.

Deskripsi (NVD)

ffcss is a CLI interface to apply and configure Firefox CSS themes. Prior to 0.2.0, the function `lookupPreprocess()` is meant to apply some transformations to a string by disabling characters in the regex `[-_ .]`. However, due to the use of late Unicode normalization of type NFKD, it is possible to bypass that validation and re-introduce all the characters in the regex `[-_ .]`. The `lookupPreprocess()` can be easily bypassed with equivalent Unicode characters like U+FE4D (﹍), which would result in the omitted U+005F (_), for instance. The `lookupPreprocess()` function is only ever used to search for themes loosely (case insensitively, while ignoring dashes, underscores and dots), so the actual security impact is classified as low. This vulnerability is fixed in 0.2.0. There are no known workarounds.

Rincian

Terbit di NVD

28 Desember 2023

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.3 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-176: Improper Handling of Unicode Encoding

EPSS (30 hari)

0,52% peluang dieksploitasi; lebih tinggi dari 42,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/ewen-lbh/ffcss/security/advisories/GHSA-wpmx-564x-h2mh exploit · advisory vendor
• https://github.com/ewen-lbh/ffcss/commit/f9c491874b858a32fcae15045f169fd7d02f90dc patch