CVE-2018-19278 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Digium	Asterisk	15.0.0

Related Weaknesses (CWE)

CWE-119

References

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

FAQ

What is CVE-2018-19278?

CVE-2018-19278 is a vulnerability with a CVSS score of 7.5 (HIGH). 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, b...

How severe is CVE-2018-19278?

CVE-2018-19278 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-19278?

Check the references section above for vendor advisories and patch information. Affected products include: Digium Asterisk.