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.
{
"unresolved_ranges": [
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "14.04"
}
],
"cpe": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "16.04"
}
],
"cpe": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "17.04"
}
],
"cpe": "cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "7.0"
}
],
"cpe": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "7.1"
}
],
"cpe": "cpe:2.3:o:debian:debian_linux:7.1:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "9.0"
}
],
"cpe": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "27"
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"cpe": "cpe:2.3:o:fedoraproject:fedora:27:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "42.2"
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],
"cpe": "cpe:2.3:o:novell:leap:42.2:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "42.3"
}
],
"cpe": "cpe:2.3:o:novell:leap:42.3:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
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"cpe": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "7.0"
}
],
"cpe": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
},
{
"source": "CPE_FIELD",
"extracted_events": [
{
"last_affected": "7.0"
}
],
"cpe": "cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"
}
]
}{
"source": "CPE_FIELD",
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "2.77"
}
],
"cpe": "cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*"
}