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Heap-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DNS response.
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
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...
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
Dnsmasq before 2.76 allows remote servers to cause a denial of service (crash) via a reply with an empty DNS address that has an (1) A or (2) AAAA record defined locally.
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
Some fixes available 4 of 5
The tcp_request function in Dnsmasq before 2.73rc4 does not properly handle the return value of the setup_reply function, which allows remote attackers to read process memory and cause a denial of service (out-of-bounds read and...
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
Some fixes available 7 of 12
Dnsmasq before 2.66test2, when used with certain libvirt configurations, replies to queries from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via spoofed TCP based DNS...
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
Dnsmasq before 2.63test1, when used with certain libvirt configurations, replies to requests from prohibited interfaces, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed DNS query.
2 affected packages
dnsmasq, libvirt
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
libvirt | — | — | — | — |
The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a...
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
Heap-based buffer overflow in the tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, might allow remote attackers to execute arbitrary code via a long filename in a TFTP packet, as demonstrated by...
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
dnsmasq 2.43 allows remote attackers to cause a denial of service (daemon crash) by (1) sending a DHCPINFORM while lacking a DHCP lease, or (2) attempting to renew a nonexistent DHCP lease for an invalid subnet as an "unknown...
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |
dnsmasq 2.25 allows remote attackers to cause a denial of service (daemon crash) by (1) renewing a nonexistent lease or (2) sending a DHCPREQUEST for an IP address that is not in the same network, related to the DHCP NAK response...
1 affected package
dnsmasq
Package | 24.04 LTS | 22.04 LTS | 20.04 LTS | 18.04 LTS |
---|---|---|---|---|
dnsmasq | — | — | — | — |