CVE-2024-1931 (GCVE-0-2024-1931)
Vulnerability from cvelistv5
Published
2024-03-07 09:17
Modified
2025-02-13 17:32
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Summary
NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can lead to an infinite loop. Unbound 1.18.0 introduced a feature that removes EDE records from responses with size higher than the client's advertised buffer size. Before removing all the EDE records however, it would try to see if trimming the extra text fields on those records would result in an acceptable size while still retaining the EDE codes. Due to an unchecked condition, the code that trims the text of the EDE records could loop indefinitely. This happens when Unbound would reply with attached EDE information on a positive reply and the client's buffer size is smaller than the needed space to include EDE records. The vulnerability can only be triggered when the 'ede: yes' option is used; non default configuration. From version 1.19.2 on, the code is fixed to avoid looping indefinitely.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| NLnet Labs | Unbound |
Version: 1.18.0 ≤ |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-01T18:56:22.442Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2024-1931.txt"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCBRQ7KMSIGBQ6A4SBL5PF326DIJIIV/"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B2JUIFPA7H75Q2W3VXW2TUNHK6NVGOX4/"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBR4H7RCVMJ6H76S4LLRSY5EBFTYWGXK/"
},
{
"tags": [
"x_transferred"
],
"url": "https://lists.freebsd.org/archives/freebsd-security/2024-July/000283.html"
},
{
"tags": [
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20240705-0006/"
}
],
"title": "CVE Program Container"
},
{
"affected": [
{
"cpes": [
"cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unknown",
"product": "unbound",
"vendor": "nlnetlabs",
"versions": [
{
"lessThan": "1.19.2",
"status": "affected",
"version": "1.18.0",
"versionType": "custom"
}
]
}
],
"metrics": [
{
"other": {
"content": {
"id": "CVE-2024-1931",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2024-03-07T18:41:49.748390Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2024-08-28T20:43:00.408Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Unbound",
"vendor": "NLnet Labs",
"versions": [
{
"lessThan": "1.19.2",
"status": "affected",
"version": "1.18.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Fredrik Pettai, SUNET"
},
{
"lang": "en",
"type": "finder",
"value": "Patrik Lundin, SUNET"
}
],
"datePublic": "2024-03-07T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can lead to an infinite loop. Unbound 1.18.0 introduced a feature that removes EDE records from responses with size higher than the client\u0027s advertised buffer size. Before removing all the EDE records however, it would try to see if trimming the extra text fields on those records would result in an acceptable size while still retaining the EDE codes. Due to an unchecked condition, the code that trims the text of the EDE records could loop indefinitely. This happens when Unbound would reply with attached EDE information on a positive reply and the client\u0027s buffer size is smaller than the needed space to include EDE records. The vulnerability can only be triggered when the \u0027ede: yes\u0027 option is used; non default configuration. From version 1.19.2 on, the code is fixed to avoid looping indefinitely."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "\u0027ede: yes\u0027 option set"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-835",
"description": "CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2024-07-05T16:05:59.717Z",
"orgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6",
"shortName": "NLnet Labs"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2024-1931.txt"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCBRQ7KMSIGBQ6A4SBL5PF326DIJIIV/"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B2JUIFPA7H75Q2W3VXW2TUNHK6NVGOX4/"
},
{
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBR4H7RCVMJ6H76S4LLRSY5EBFTYWGXK/"
},
{
"url": "https://lists.freebsd.org/archives/freebsd-security/2024-July/000283.html"
},
{
"url": "https://security.netapp.com/advisory/ntap-20240705-0006/"
}
],
"solutions": [
{
"lang": "en",
"value": "This issue is fixed in 1.19.2 and all later versions. For the vulnerable versions 1.18.0 up to and including 1.19.1, the option \u0027ede: no\u0027 (default configuration) is also a solution as it does not exercise the vulnerable code path."
}
],
"timeline": [
{
"lang": "en",
"time": "2024-02-17T00:00:00.000Z",
"value": "Issue reported by SUNET"
},
{
"lang": "en",
"time": "2024-02-19T00:00:00.000Z",
"value": "Issue acknowledged by NLnet Labs"
},
{
"lang": "en",
"time": "2021-09-22T00:00:00.000Z",
"value": "Mitigation shared with SUNET"
},
{
"lang": "en",
"time": "2024-03-07T00:00:00.000Z",
"value": "Fixes released with Unbound 1.19.2"
}
],
"title": "Denial of service when trimming EDE text on positive replies"
}
},
"cveMetadata": {
"assignerOrgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6",
"assignerShortName": "NLnet Labs",
"cveId": "CVE-2024-1931",
"datePublished": "2024-03-07T09:17:13.072Z",
"dateReserved": "2024-02-27T13:43:18.777Z",
"dateUpdated": "2025-02-13T17:32:27.025Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.nlnetlabs.nl/downloads/unbound/CVE-2024-1931.txt\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCBRQ7KMSIGBQ6A4SBL5PF326DIJIIV/\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B2JUIFPA7H75Q2W3VXW2TUNHK6NVGOX4/\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBR4H7RCVMJ6H76S4LLRSY5EBFTYWGXK/\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.freebsd.org/archives/freebsd-security/2024-July/000283.html\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20240705-0006/\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-01T18:56:22.442Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-1931\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-03-07T18:41:49.748390Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*\"], \"vendor\": \"nlnetlabs\", \"product\": \"unbound\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.18.0\", \"lessThan\": \"1.19.2\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-08-28T20:39:44.804Z\"}}], \"cna\": {\"title\": \"Denial of service when trimming EDE text on positive replies\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Fredrik Pettai, SUNET\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Patrik Lundin, SUNET\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"\u0027ede: yes\u0027 option set\"}]}], \"affected\": [{\"vendor\": \"NLnet Labs\", \"product\": \"Unbound\", \"versions\": [{\"status\": \"affected\", \"version\": \"1.18.0\", \"lessThan\": \"1.19.2\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2024-02-17T00:00:00.000Z\", \"value\": \"Issue reported by SUNET\"}, {\"lang\": \"en\", \"time\": \"2024-02-19T00:00:00.000Z\", \"value\": \"Issue acknowledged by NLnet Labs\"}, {\"lang\": \"en\", \"time\": \"2021-09-22T00:00:00.000Z\", \"value\": \"Mitigation shared with SUNET\"}, {\"lang\": \"en\", \"time\": \"2024-03-07T00:00:00.000Z\", \"value\": \"Fixes released with Unbound 1.19.2\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"This issue is fixed in 1.19.2 and all later versions. For the vulnerable versions 1.18.0 up to and including 1.19.1, the option \u0027ede: no\u0027 (default configuration) is also a solution as it does not exercise the vulnerable code path.\"}], \"datePublic\": \"2024-03-07T00:00:00.000Z\", \"references\": [{\"url\": \"https://www.nlnetlabs.nl/downloads/unbound/CVE-2024-1931.txt\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCBRQ7KMSIGBQ6A4SBL5PF326DIJIIV/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B2JUIFPA7H75Q2W3VXW2TUNHK6NVGOX4/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBR4H7RCVMJ6H76S4LLRSY5EBFTYWGXK/\"}, {\"url\": \"https://lists.freebsd.org/archives/freebsd-security/2024-July/000283.html\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20240705-0006/\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"NLnet Labs Unbound version 1.18.0 up to and including version 1.19.1 contain a vulnerability that can cause denial of service by a certain code path that can lead to an infinite loop. Unbound 1.18.0 introduced a feature that removes EDE records from responses with size higher than the client\u0027s advertised buffer size. Before removing all the EDE records however, it would try to see if trimming the extra text fields on those records would result in an acceptable size while still retaining the EDE codes. Due to an unchecked condition, the code that trims the text of the EDE records could loop indefinitely. This happens when Unbound would reply with attached EDE information on a positive reply and the client\u0027s buffer size is smaller than the needed space to include EDE records. The vulnerability can only be triggered when the \u0027ede: yes\u0027 option is used; non default configuration. From version 1.19.2 on, the code is fixed to avoid looping indefinitely.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-835\", \"description\": \"CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"206fc3a0-e175-490b-9eaa-a5738056c9f6\", \"shortName\": \"NLnet Labs\", \"dateUpdated\": \"2024-07-05T16:05:59.717Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-1931\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-02-13T17:32:27.025Z\", \"dateReserved\": \"2024-02-27T13:43:18.777Z\", \"assignerOrgId\": \"206fc3a0-e175-490b-9eaa-a5738056c9f6\", \"datePublished\": \"2024-03-07T09:17:13.072Z\", \"assignerShortName\": \"NLnet Labs\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…