In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
Published 2017-10-03 01:29:02
Updated 2018-05-11 01:29:03
Source MITRE
View at NVD,   CVE.org
Vulnerability category: Input validation

Products affected by CVE-2017-13704

Threat overview for CVE-2017-13704

Top countries where our scanners detected CVE-2017-13704
Top open port discovered on systems with this issue 53
IPs affected by CVE-2017-13704 813,801
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2017-13704!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2017-13704

62.96%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 98 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-13704

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
5.0
MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
NIST
7.5
HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
NIST

CWE ids for CVE-2017-13704

  • The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-13704

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