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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History
No history.

Status: PUBLISHED
Assigner: mitre
Published: 2017-10-02T21:00:00
Updated: 2024-08-05T19:05:20.078Z
Reserved: 2017-08-25T00:00:00
Link: CVE-2017-13704

No data.

Status : Deferred
Published: 2017-10-03T01:29:01.637
Modified: 2025-04-20T01:37:25.860
Link: CVE-2017-13704
