NULL pointer dereference in Asterisk Certified_asterisk

CVE-2021-46837

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…

EPSS: 0.018 (76.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-46837?
CVE-2021-46837 is a medium-severity vulnerability in Asterisk Certified_asterisk, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2022-08-30.
How severe is CVE-2021-46837?
Medium severity. CVSS v3 base score is 6.5 out of 10.