Filtered by vendor Thekelleys
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Total
8 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2020-25682 | 3 Debian, Fedoraproject, Thekelleys | 3 Debian Linux, Fedora, Dnsmasq | 2021-03-26 | 8.3 HIGH | 8.1 HIGH |
| A flaw was found in dnsmasq before 2.83. A buffer overflow vulnerability was discovered in the way dnsmasq extract names from DNS packets before validating them with DNSSEC data. An attacker on the network, who can create valid DNS replies, could use this flaw to cause an overflow with arbitrary data in a heap-allocated memory, possibly executing code on the machine. The flaw is in the rfc1035.c:extract_name() function, which writes data to the memory pointed by name assuming MAXDNAME*2 bytes are available in the buffer. However, in some code execution paths, it is possible extract_name() gets passed an offset from the base buffer, thus reducing, in practice, the number of available bytes that can be written in the buffer. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. | |||||
| CVE-2020-25681 | 3 Debian, Fedoraproject, Thekelleys | 3 Debian Linux, Fedora, Dnsmasq | 2021-03-26 | 8.3 HIGH | 8.1 HIGH |
| A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. | |||||
| CVE-2019-14513 | 1 Thekelleys | 1 Dnsmasq | 2020-08-24 | 5.0 MEDIUM | 7.5 HIGH |
| Improper bounds checking in Dnsmasq before 2.76 allows an attacker controlled DNS server to send large DNS packets that result in a read operation beyond the buffer allocated for the packet, a different vulnerability than CVE-2017-14491. | |||||
| CVE-2017-15107 | 1 Thekelleys | 1 Dnsmasq | 2019-10-09 | 5.0 MEDIUM | 7.5 HIGH |
| A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist. | |||||
| CVE-2017-14495 | 5 Canonical, Debian, Novell and 2 more | 7 Ubuntu Linux, Debian Linux, Leap and 4 more | 2019-10-03 | 5.0 MEDIUM | 7.5 HIGH |
| Memory leak in dnsmasq before 2.78, when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service (memory consumption) via vectors involving DNS response creation. | |||||
| CVE-2017-14496 | 6 Canonical, Debian, Google and 3 more | 8 Ubuntu Linux, Debian Linux, Android and 5 more | 2018-05-11 | 7.8 HIGH | 7.5 HIGH |
| Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request. | |||||
| CVE-2017-13704 | 6 Canonical, Debian, Fedoraproject and 3 more | 8 Ubuntu Linux, Debian Linux, Fedora and 5 more | 2018-05-11 | 5.0 MEDIUM | 7.5 HIGH |
| 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. | |||||
| CVE-2015-8899 | 2 Canonical, Thekelleys | 2 Ubuntu Linux, Dnsmasq | 2016-11-28 | 5.0 MEDIUM | 7.5 HIGH |
| 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. | |||||