CVE-2017-13704
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Thekelleys Dnsmasq
PublishedOct 3, 2017
First seenOct 3, 2017
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| thekelleys dnsmasq | v ≤ 2.77 | — |
| canonical ubuntu_linux | 14.04, 16.04, 17.04 | — |
| debian debian_linux | 7.0, 7.1, 9.0 | — |
| fedoraproject fedora | 27 | — |
| novell leap | 42.2, 42.3 | — |
| redhat enterprise_linux_desktop | 7.0 | — |
| redhat enterprise_linux_server | 7.0 | — |
| redhat enterprise_linux_workstation | 7.0 | — |
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