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Status published
High
CVE-2017-13704
In dnsmasq before 2.78, if the DNS packet size does...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.securitytracker.com/id/1039474
- https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq
- https://access.redhat.com/security/vulnerabilities/3199382
- http://www.securityfocus.com/bid/101085
- http://www.securityfocus.com/bid/101977
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4TK6DWC53WSU6633EVZL7H4PCWBYHMHK/
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=63437ffbb58837b214b4b92cb1c54bc5f3279928
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
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Affected Vendor
canonical
View all reports →Affected Software
ubuntu linux, debian linux, fedora, leap, enterprise linux desktop, enterprise linux server, enterprise linux workstation, dnsmasq
Vulnerable Versions:
14.04, 16.04, 17.04, 7.0, 7.1, 9.0, 27, 42.2, 42.3, 0
Timeline
Official Publish:
October 2nd, 2017
Last Modified:
August 5th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.