Denial of Service Vulnerability in dnsmasq 2.78 and earlier

CVE-2017-13704 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

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.

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