CVE-2021-26906: digium asterisk +1 lainnya

csirt@kutim:~/threat-intel/cve/CVE-2021-26906

CVSS 5.9 · Medium EPSS 2,5%

Kerentanan Improper Resource Shutdown or Release pada digium asterisk, digium certified asterisk. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

An issue was discovered in res_pjsip_session.c in Digium Asterisk through 13.38.1; 14.x, 15.x, and 16.x through 16.16.0; 17.x through 17.9.1; and 18.x through 18.2.0, and Certified Asterisk through 16.8-cert5. An SDP negotiation vulnerability in PJSIP allows a remote server to potentially crash Asterisk by sending specific SIP responses that cause an SDP negotiation failure.

Rincian

Terbit di NVD: 18 Februari 2021
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 5.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-404: Improper Resource Shutdown or Release
EPSS (30 hari): 2,5% peluang dieksploitasi; lebih tinggi dari 84,6% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
digium	asterisk	Versi 13.0.0 hingga sebelum 13.38.2
digium	asterisk	Versi 16.0.0 hingga sebelum 16.16.1
digium	asterisk	Versi 17.0.0 hingga sebelum 17.9.2
digium	asterisk	Versi 18.0 hingga sebelum 18.2.1
digium	certified asterisk	Versi 16.8
digium	certified asterisk	Versi 16.8 cert1-rc1
digium	certified asterisk	Versi 16.8 cert1-rc2
digium	certified asterisk	Versi 16.8 cert1-rc3
digium	certified asterisk	Versi 16.8 cert1-rc4
digium	certified asterisk	Versi 16.8 cert2
digium	certified asterisk	Versi 16.8 cert3
digium	certified asterisk	Versi 16.8 cert4
digium	certified asterisk	Versi 16.8 cert4-rc1
digium	certified asterisk	Versi 16.8 cert4-rc2
digium	certified asterisk	Versi 16.8 cert4-rc3
digium	certified asterisk	Versi 16.8 cert4-rc4
digium	certified asterisk	Versi 16.8 cert5

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://downloads.asterisk.org/pub/security/ advisory vendor
https://downloads.asterisk.org/pub/security/AST-2021-005.html advisory vendor
https://issues.asterisk.org/jira/browse/ASTERISK-29196 issue tracking · patch · advisory vendor
http://seclists.org/fulldisclosure/2021/Feb/61 mailing list · patch · advisory pihak ketiga
http://packetstormsecurity.com/files/161477/Asterisk-Project-Security-Advisory-AST-2021-005.html advisory pihak ketiga

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.