vulnerability
CVE-2017-13704: DNSMasq: Integer underflow flaw leading to buffer over-read
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Oct 2, 2017 | Oct 2, 2017 | Dec 4, 2017 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Oct 2, 2017
Added
Oct 2, 2017
Modified
Dec 4, 2017
Description
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.
Solution
dnsmasq-upgrade-latest
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