272 lines
12 KiB
JSON
272 lines
12 KiB
JSON
{
|
|
"containers": {
|
|
"cna": {
|
|
"affected": [
|
|
{
|
|
"product": "dnsmasq",
|
|
"vendor": "n/a",
|
|
"versions": [
|
|
{
|
|
"status": "affected",
|
|
"version": "dnsmasq 2.83"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "A 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. A remote attacker, who can create valid DNS replies, could use this flaw 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 get_rdata() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability."
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"cweId": "CWE-122",
|
|
"description": "CWE-122",
|
|
"lang": "en",
|
|
"type": "CWE"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"dateUpdated": "2021-03-22T20:06:15.000Z",
|
|
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
|
|
"shortName": "redhat"
|
|
},
|
|
"references": [
|
|
{
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://www.jsof-tech.com/disclosures/dnspooq/"
|
|
},
|
|
{
|
|
"tags": [
|
|
"x_refsource_MISC"
|
|
],
|
|
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1882018"
|
|
},
|
|
{
|
|
"name": "FEDORA-2021-84440e87ba",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_FEDORA"
|
|
],
|
|
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/"
|
|
},
|
|
{
|
|
"name": "GLSA-202101-17",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_GENTOO"
|
|
],
|
|
"url": "https://security.gentoo.org/glsa/202101-17"
|
|
},
|
|
{
|
|
"name": "DSA-4844",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_DEBIAN"
|
|
],
|
|
"url": "https://www.debian.org/security/2021/dsa-4844"
|
|
},
|
|
{
|
|
"name": "FEDORA-2021-2e4c3d5a9d",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_FEDORA"
|
|
],
|
|
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/"
|
|
},
|
|
{
|
|
"name": "[debian-lts-announce] 20210322 [SECURITY] [DLA 2604-1] dnsmasq security update",
|
|
"tags": [
|
|
"mailing-list",
|
|
"x_refsource_MLIST"
|
|
],
|
|
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html"
|
|
}
|
|
],
|
|
"x_legacyV4Record": {
|
|
"CVE_data_meta": {
|
|
"ASSIGNER": "secalert@redhat.com",
|
|
"ID": "CVE-2020-25683",
|
|
"STATE": "PUBLIC"
|
|
},
|
|
"affects": {
|
|
"vendor": {
|
|
"vendor_data": [
|
|
{
|
|
"product": {
|
|
"product_data": [
|
|
{
|
|
"product_name": "dnsmasq",
|
|
"version": {
|
|
"version_data": [
|
|
{
|
|
"version_value": "dnsmasq 2.83"
|
|
}
|
|
]
|
|
}
|
|
}
|
|
]
|
|
},
|
|
"vendor_name": "n/a"
|
|
}
|
|
]
|
|
}
|
|
},
|
|
"data_format": "MITRE",
|
|
"data_type": "CVE",
|
|
"data_version": "4.0",
|
|
"description": {
|
|
"description_data": [
|
|
{
|
|
"lang": "eng",
|
|
"value": "A 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. A remote attacker, who can create valid DNS replies, could use this flaw 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 get_rdata() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability."
|
|
}
|
|
]
|
|
},
|
|
"problemtype": {
|
|
"problemtype_data": [
|
|
{
|
|
"description": [
|
|
{
|
|
"lang": "eng",
|
|
"value": "CWE-122"
|
|
}
|
|
]
|
|
}
|
|
]
|
|
},
|
|
"references": {
|
|
"reference_data": [
|
|
{
|
|
"name": "https://www.jsof-tech.com/disclosures/dnspooq/",
|
|
"refsource": "MISC",
|
|
"url": "https://www.jsof-tech.com/disclosures/dnspooq/"
|
|
},
|
|
{
|
|
"name": "https://bugzilla.redhat.com/show_bug.cgi?id=1882018",
|
|
"refsource": "MISC",
|
|
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1882018"
|
|
},
|
|
{
|
|
"name": "FEDORA-2021-84440e87ba",
|
|
"refsource": "FEDORA",
|
|
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/"
|
|
},
|
|
{
|
|
"name": "GLSA-202101-17",
|
|
"refsource": "GENTOO",
|
|
"url": "https://security.gentoo.org/glsa/202101-17"
|
|
},
|
|
{
|
|
"name": "DSA-4844",
|
|
"refsource": "DEBIAN",
|
|
"url": "https://www.debian.org/security/2021/dsa-4844"
|
|
},
|
|
{
|
|
"name": "FEDORA-2021-2e4c3d5a9d",
|
|
"refsource": "FEDORA",
|
|
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/"
|
|
},
|
|
{
|
|
"name": "[debian-lts-announce] 20210322 [SECURITY] [DLA 2604-1] dnsmasq security update",
|
|
"refsource": "MLIST",
|
|
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html"
|
|
}
|
|
]
|
|
}
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"title": "CVE Program Container",
|
|
"references": [
|
|
{
|
|
"tags": [
|
|
"x_refsource_MISC",
|
|
"x_transferred"
|
|
],
|
|
"url": "https://www.jsof-tech.com/disclosures/dnspooq/"
|
|
},
|
|
{
|
|
"tags": [
|
|
"x_refsource_MISC",
|
|
"x_transferred"
|
|
],
|
|
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1882018"
|
|
},
|
|
{
|
|
"name": "FEDORA-2021-84440e87ba",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_FEDORA",
|
|
"x_transferred"
|
|
],
|
|
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/"
|
|
},
|
|
{
|
|
"name": "GLSA-202101-17",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_GENTOO",
|
|
"x_transferred"
|
|
],
|
|
"url": "https://security.gentoo.org/glsa/202101-17"
|
|
},
|
|
{
|
|
"name": "DSA-4844",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_DEBIAN",
|
|
"x_transferred"
|
|
],
|
|
"url": "https://www.debian.org/security/2021/dsa-4844"
|
|
},
|
|
{
|
|
"name": "FEDORA-2021-2e4c3d5a9d",
|
|
"tags": [
|
|
"vendor-advisory",
|
|
"x_refsource_FEDORA",
|
|
"x_transferred"
|
|
],
|
|
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/"
|
|
},
|
|
{
|
|
"name": "[debian-lts-announce] 20210322 [SECURITY] [DLA 2604-1] dnsmasq security update",
|
|
"tags": [
|
|
"mailing-list",
|
|
"x_refsource_MLIST",
|
|
"x_transferred"
|
|
],
|
|
"url": "https://lists.debian.org/debian-lts-announce/2021/03/msg00027.html"
|
|
},
|
|
{
|
|
"url": "https://www.kb.cert.org/vuls/id/434904"
|
|
}
|
|
],
|
|
"providerMetadata": {
|
|
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
|
|
"shortName": "CVE",
|
|
"dateUpdated": "2025-11-04T19:12:11.018Z"
|
|
}
|
|
}
|
|
]
|
|
},
|
|
"cveMetadata": {
|
|
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
|
|
"assignerShortName": "redhat",
|
|
"cveId": "CVE-2020-25683",
|
|
"datePublished": "2021-01-20T15:25:04.000Z",
|
|
"dateReserved": "2020-09-16T00:00:00.000Z",
|
|
"dateUpdated": "2025-11-04T19:12:11.018Z",
|
|
"state": "PUBLISHED"
|
|
},
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2"
|
|
} |