{"vulnerability": "cve-2020-25687", "sightings": [{"uuid": "47325d7b-9137-42c6-b504-a6f78c0c5f91", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2020-25687", "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": "6bc2fa88-b0f3-4341-ab7c-66cf7c950b44", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25687", "type": "seen", "source": "https://t.me/cibsecurity/22427", "content": "\u203c CVE-2020-25687 \u203c\n\nA flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in sort_rrset() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "creation_timestamp": "2021-01-20T20:27:18.000000Z"}, {"uuid": "ceebe370-dc72-4294-a8ba-562738ceff0b", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25687", "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": "922d481f-84b3-4d35-99dc-485b1dc8e870", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25687", "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": "2026-09-01T17:01:04.228003Z"}, {"uuid": "c3620d5c-5096-47bd-816f-8f916405dd87", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25687", "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": "2026-09-01T20:02:45.443803Z"}, {"uuid": "e2086afc-b23e-4144-a8cb-b51c8515a726", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25687", "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": "2026-09-02T01:03:20.696189Z"}, {"uuid": "a22a10eb-c9d5-4179-97ae-9b2c169092c1", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2020-25687", "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": "2026-09-02T01:04:54.115816Z"}]}