CVE-2021-46837

Katalog CVE

CVSS 6.5 · Medium EPSS 4,4%

Kerentanan NULL Pointer Dereference pada certified asterisk, digium asterisk +1 lainnya. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.

Rincian

Terbit di NVD

30 Agustus 2022

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-476: NULL Pointer Dereference

EPSS (30 hari)

4,4% peluang dieksploitasi; lebih tinggi dari 91,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://downloads.asterisk.org/pub/security/AST-2021-006.html advisory vendor
• https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html mailing list · advisory pihak ketiga
• https://www.debian.org/security/2022/dsa-5285 advisory pihak ketiga