CVE-2018-19278

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-11-14 · updated 2026-06-17
Weakness: CWE-119

Description

Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length.

Affected products

Digium Asterisk: 15.0.0, 15.0.0-b1, 15.0.0-rc1, 15.1.0, 15.1.0-rc1, 15.1.0-rc2 (+24)

References

https://downloads.asterisk.org/pub/security/AST-2018-010.html
https://issues.asterisk.org/jira/browse/ASTERISK-28127
https://downloads.asterisk.org/pub/security/AST-2018-010.html
https://issues.asterisk.org/jira/browse/ASTERISK-28127

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