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High severity · published Nov 14, 2018
CVE-2018-19278
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…
7.5
CVSS
3.6%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asterisk · Digium
15.0.0; 15.0.0; 15.0.0; 15.1.0; 15.1.0; 15.1.0; +24 more · source: NVD
Affected product
AS
Asterisk
Digium
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-19278
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-19278
Patch
https://downloads.asterisk.org/pub/security/AST-2018-010.html
Exploit
https://issues.asterisk.org/jira/browse/ASTERISK-28127
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