An integer underflow flaw leading to a buffer over-read was found in dnsmasq in the DNS code. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash.
Find out more about CVE-2017-13704 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity Impact | None |
| Availability Impact | High |
| Platform | Package | State |
|---|---|---|
| Red Hat OpenStack Platform 9.0 | dnsmasq | Not affected |
| Red Hat OpenStack Platform 8.0 (Liberty) | dnsmasq | Not affected |
| Red Hat OpenStack Platform 12.0 | dnsmasq | Not affected |
| Red Hat OpenStack Platform 11.0 (Ocata) | dnsmasq | Not affected |
| Red Hat OpenStack Platform 10 | dnsmasq | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7 | dnsmasq | Not affected |
| Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7 | dnsmasq | Not affected |
| Red Hat Enterprise Linux 7 | dnsmasq | Not affected |
| Red Hat Enterprise Linux 6 | dnsmasq | Not affected |
| Red Hat Enterprise Linux 5 | dnsmasq | Not affected |
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