{"vulnerability": "CVE-2020-25685", "sightings": [{"uuid": "8dbc65b4-ba79-4d60-81a8-277aa371dbe3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://www.kyberturvallisuuskeskus.fi/fi/dnspooq-haavoittuvuusjoukko-laajalti-kaytossa-olevassa-dnsmasq-ohjelmistossa", "content": "", "creation_timestamp": "2021-01-20T11:02:54.000000Z"}, {"uuid": "fc6c0874-f937-4f9d-8422-d0e6d836f3e9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://t.me/cibsecurity/22350", "content": "\u203c CVE-2020-25685 \u203c\n\nA flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in forward.c:reply_query(), which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash (CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is) this flaw allows an off-path attacker to find several different domains all having the same hash, substantially reducing the number of attempts they would have to perform to forge a reply and get it accepted by dnsmasq. This is in contrast with RFC5452, which specifies that the query name is one of the attributes of a query that must be used to match a reply. This flaw could be abused to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25684 the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-01-20T18:27:29.000000Z"}, {"uuid": "2bc2e253-a04f-4689-a142-6178a587916b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://t.me/VulnerabilityNews/19766", "content": "A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:reply_query() if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially reducing the number of attempts an attacker on the network would have to perform to forge a reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's attributes that all must be used to match a reply. This flaw allows an attacker to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25685 or CVE-2020-25686, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.\nPublished at: January 20, 2021 at 05:15PM\nView on website", "creation_timestamp": "2021-01-20T18:46:29.000000Z"}, {"uuid": "4c3c728a-34f2-4f28-8060-14fc11a074b2", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://t.me/CyberSecurityTechnologies/2534", "content": "#Whitepaper\n#Threat_Research\n\"DNSpooq: Cache Poisoning and RCE in Popular DNS Forwarder dnsmasq\", 2021.\n// CVE-2020-25684, CVE-2020-25685, \nCVE-2020-25686 - DNS-spoofing; CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687 - RCE.", "creation_timestamp": "2021-01-21T02:28:28.000000Z"}, {"uuid": "a5f9d31b-6230-4c02-9d2c-081bdf4e9561", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "published-proof-of-concept", "source": "https://t.me/reverseame/851", "content": "DNSpooq - dnsmasq cache poisoning (CVE-2020-25686, CVE-2020-25684, CVE-2020-25685) https://github.com/knqyf263/dnspooq", "creation_timestamp": "2026-08-03T13:21:45.409089Z"}, {"uuid": "c397e48e-f0af-401f-a4c9-eb0d6e61d097", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "published-proof-of-concept", "source": "https://t.me/reverseame/851", "content": "DNSpooq - dnsmasq cache poisoning (CVE-2020-25686, CVE-2020-25684, CVE-2020-25685) https://github.com/knqyf263/dnspooq", "creation_timestamp": "2026-08-04T00:00:39.372197Z"}, {"uuid": "633e8fef-87d8-4af5-b6c7-6bbb1750beea", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://t.me/reverseame/851", "content": "DNSpooq - dnsmasq cache poisoning (CVE-2020-25686, CVE-2020-25684, CVE-2020-25685) https://github.com/knqyf263/dnspooq", "creation_timestamp": "2026-07-29T12:03:00.317938Z"}, {"uuid": "b9f8944a-ca6f-453d-ad15-5f12a7a90d49", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://t.me/reverseame/851", "content": "DNSpooq - dnsmasq cache poisoning (CVE-2020-25686, CVE-2020-25684, CVE-2020-25685) https://github.com/knqyf263/dnspooq", "creation_timestamp": "2026-07-30T00:02:49.814678Z"}, {"uuid": "408133d7-7f45-45f1-8124-48bbad9bca2c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "published-proof-of-concept", "source": "https://t.me/cissp/2224", "content": "#Whitepaper\n#Threat_Research\n\"DNSpooq: Cache Poisoning and RCE in Popular DNS Forwarder dnsmasq\", 2021.\n// CVE-2020-25684, CVE-2020-25685, \nCVE-2020-25686 - DNS-spoofing; CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687 - RCE.", "creation_timestamp": "2026-09-01T17:01:04.275020Z"}, {"uuid": "18280b78-676f-431d-bd1e-b49876204c24", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://t.me/hacking_Attack/6537", "content": "Cisco Security Advisory\nMultiple Vulnerabilities in dnsmasq DNS Forwarder Affecting Cisco Products: January 2021\n\nA set of previously unknown vulnerabilities in the DNS forwarder implementation of dnsmasq were disclosed on January 19, 2021. The vulnerabilities are collectively known as DNSpooq.\n\nExploitation of these vulnerabilities could result in remote code execution or denial of service (DoS), or may allow an attacker to more easily forge DNS answers that can poison DNS caches, depending on the specific vulnerability.\n\nMultiple Cisco\u00a0products are affected by these vulnerabilities.\n\nCisco\u00a0will release software updates that address these vulnerabilities. Any workarounds for a specific Cisco\u00a0product or service will be documented in the relevant Cisco\u00a0bugs, which are identified in the Vulnerable Products section of this advisory.\n\nNote: At the time of publication, no Cisco\u00a0products were found to be affected by the remote code execution and DoS vulnerabilities, which are identified by the following Common Vulnerabilities and Exposures (CVE) IDs:\n* CVE-2020-25681 \n* CVE-2020-25682\n* CVE-2020-25683\n* CVE-2020-25687\n\nThis advisory is available at the following link:\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnsmasq-dns-2021-c5mrdf3g\n\nSecurity Impact Rating:  Medium \nCVE: CVE-2020-25681,CVE-2020-25682,CVE-2020-25683,CVE-2020-25684,CVE-2020-25685,CVE-2020-25686,CVE-2020-25687\n\n___________________________ \n@hacking_Attack\n@Hacking_Video", "creation_timestamp": "2026-09-01T20:02:45.689545Z"}, {"uuid": "b4be5849-a85f-4241-aab9-de2fa121492c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "seen", "source": "https://t.me/hacking_Attack/6537", "content": "Cisco Security Advisory\nMultiple Vulnerabilities in dnsmasq DNS Forwarder Affecting Cisco Products: January 2021\n\nA set of previously unknown vulnerabilities in the DNS forwarder implementation of dnsmasq were disclosed on January 19, 2021. The vulnerabilities are collectively known as DNSpooq.\n\nExploitation of these vulnerabilities could result in remote code execution or denial of service (DoS), or may allow an attacker to more easily forge DNS answers that can poison DNS caches, depending on the specific vulnerability.\n\nMultiple Cisco\u00a0products are affected by these vulnerabilities.\n\nCisco\u00a0will release software updates that address these vulnerabilities. Any workarounds for a specific Cisco\u00a0product or service will be documented in the relevant Cisco\u00a0bugs, which are identified in the Vulnerable Products section of this advisory.\n\nNote: At the time of publication, no Cisco\u00a0products were found to be affected by the remote code execution and DoS vulnerabilities, which are identified by the following Common Vulnerabilities and Exposures (CVE) IDs:\n* CVE-2020-25681 \n* CVE-2020-25682\n* CVE-2020-25683\n* CVE-2020-25687\n\nThis advisory is available at the following link:\nhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dnsmasq-dns-2021-c5mrdf3g\n\nSecurity Impact Rating:  Medium \nCVE: CVE-2020-25681,CVE-2020-25682,CVE-2020-25683,CVE-2020-25684,CVE-2020-25685,CVE-2020-25686,CVE-2020-25687\n\n___________________________ \n@hacking_Attack\n@Hacking_Video", "creation_timestamp": "2026-09-02T01:03:20.908355Z"}, {"uuid": "1e682b69-1a32-46d2-81b1-5898504da3f9", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25685", "type": "published-proof-of-concept", "source": "https://t.me/cissp/2224", "content": "#Whitepaper\n#Threat_Research\n\"DNSpooq: Cache Poisoning and RCE in Popular DNS Forwarder dnsmasq\", 2021.\n// CVE-2020-25684, CVE-2020-25685, \nCVE-2020-25686 - DNS-spoofing; CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687 - RCE.", "creation_timestamp": "2026-09-02T01:04:54.149116Z"}]}