Buffer overflow in Digium Asterisk

CVE-2019-12827

Buffer overflow in res_pjsip_messaging in Digium Asterisk versions 13.21-cert3, 13.27.0, 15.7.2, 16.4.0 and earlier allows remote authenticated users to crash Asterisk by sending a specially crafted SIP MESSAGE message.

Vulnerability class: Buffer Overflow

EPSS: 0.042 (90.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-12827?
CVE-2019-12827 is a medium-severity vulnerability in Digium Asterisk, classified under Out-of-bounds Write. CVSS score: 6.5/10. Published 2019-07-12.
How severe is CVE-2019-12827?
Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2019-12827 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.