csirt@kutim:~/threat-intel/cve/CVE-2021-4456

Katalog CVE

CVSS 6.5 · Medium EPSS 0,34%

Kerentanan Incorrect Type Conversion or Cast pada mrsam net. Skor CVSS 3.1 6.5 (Medium) menurut CISA ADP.

Deskripsi (NVD)

Net::CIDR versions before 0.24 for Perl mishandle leading zeros in IP CIDR addresses, which may have unspecified impact. The functions `addr2cidr` and `cidrlookup` may return leading zeros in a CIDR string, which may in turn be parsed as octal numbers by subsequent users. In some cases an attacker may be able to leverage this to bypass access controls based on IP addresses. The documentation advises validating untrusted CIDR strings with the `cidrvalidate` function. However, this mitigation is optional and not enforced by default. In practice, users may call `addr2cidr` or `cidrlookup` with untrusted input and without validation, incorrectly assuming that this is safe.

Rincian

Terbit di NVD
27 Februari 2026
Terakhir diubah
17 Juni 2026
Status NVD
Analyzed
CVSS 3.1
6.5 (Medium), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-704: Incorrect Type Conversion or Cast
EPSS (30 hari)
0,34% peluang dieksploitasi; lebih tinggi dari 25,0% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
mrsam net Semua versi sebelum 0.24

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.