All the vulnerabilites related to NLnet Labs - Unbound
cve-2022-30699
Vulnerability from cvelistv5
Published
2022-08-01 14:13
Modified
2024-09-16 18:29
Severity ?
Summary
Novel "ghost domain names" attack by updating almost expired delegation information
Impacted products
NLnet LabsUnbound
Show details on NVD website


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            "name": "FEDORA-2022-f89beb0640",
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            "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html"
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        ],
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    ],
    "cna": {
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        {
          "product": "Unbound",
          "vendor": "NLnet Labs",
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        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "We would like to thank Xiang Li from the Network and Information Security Lab of Tsinghua University for discovering and disclosing the vulnerability."
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      ],
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          "value": "NLnet Labs Unbound, up to and including version 1.16.1, is vulnerable to a novel type of the \"ghost domain names\" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten."
        }
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          "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt"
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        },
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          "name": "FEDORA-2022-0a914d5c6b",
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          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/"
        },
        {
          "name": "GLSA-202212-02",
          "tags": [
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          "url": "https://security.gentoo.org/glsa/202212-02"
        },
        {
          "name": "[debian-lts-announce] 20230329 [SECURITY] [DLA 3371-1] unbound security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html"
        }
      ],
      "title": "Novel \"ghost domain names\" attack by updating almost expired delegation information"
    }
  },
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    "state": "PUBLISHED"
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cve-2024-1931
Vulnerability from cvelistv5
Published
2024-03-07 09:17
Modified
2024-08-28 20:43
Summary
Denial of service when trimming EDE text on positive replies
Impacted products
NLnet LabsUnbound
Show details on NVD website


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            "url": "https://security.netapp.com/advisory/ntap-20240705-0006/"
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        ],
        "title": "CVE Program Container"
      },
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        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*"
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            "product": "unbound",
            "vendor": "nlnetlabs",
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                "status": "affected",
                "version": "1.18.0",
                "versionType": "custom"
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        },
        "title": "CISA ADP Vulnrichment"
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              "versionType": "semver"
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      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Fredrik Pettai, SUNET"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Patrik Lundin, SUNET"
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      ],
      "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": [
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            "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"
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          "scenarios": [
            {
              "lang": "en",
              "value": "\u0027ede: yes\u0027 option set"
            }
          ]
        }
      ],
      "problemTypes": [
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              "cweId": "CWE-835",
              "description": "CWE-835 Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
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              "type": "CWE"
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          ]
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      ],
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        "orgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6",
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          "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2024-1931.txt"
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      ],
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          "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."
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          "time": "2024-03-07T00:00:00.000Z",
          "value": "Fixes released with Unbound 1.19.2"
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      "title": "Denial of service when trimming EDE text on positive replies"
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cve-2022-3204
Vulnerability from cvelistv5
Published
2022-09-26 13:41
Modified
2024-09-17 03:19
Severity ?
Summary
NRDelegation Attack
Impacted products
NLnet LabsUnbound
Show details on NVD website


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    "cna": {
      "affected": [
        {
          "product": "Unbound",
          "vendor": "NLnet Labs",
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "We would like to thank Yehuda Afek from Tel-Aviv University, Anat Bremler-Barr and Shani Stajnrod from Reichman University for discovering and disclosing the vulnerability."
        }
      ],
      "datePublic": "2022-09-21T00:00:00",
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        {
          "lang": "en",
          "value": "A vulnerability named \u0027Non-Responsive Delegation Attack\u0027 (NRDelegation Attack) has been discovered in various DNS resolving software. The NRDelegation Attack works by having a malicious delegation with a considerable number of non responsive nameservers. The attack starts by querying a resolver for a record that relies on those unresponsive nameservers. The attack can cause a resolver to spend a lot of time/resources resolving records under a malicious delegation point where a considerable number of unresponsive NS records reside. It can trigger high CPU usage in some resolver implementations that continually look in the cache for resolved NS records in that delegation. This can lead to degraded performance and eventually denial of service in orchestrated attacks. Unbound does not suffer from high CPU usage, but resources are still needed for resolving the malicious delegation. Unbound will keep trying to resolve the record until hard limits are reached. Based on the nature of the attack and the replies, different limits could be reached. From version 1.16.3 on, Unbound introduces fixes for better performance when under load, by cutting opportunistic queries for nameserver discovery and DNSKEY prefetching and limiting the number of times a delegation point can issue a cache lookup for missing records."
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      "title": "NRDelegation Attack"
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    "assignerShortName": "NLnet Labs",
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cve-2020-28935
Vulnerability from cvelistv5
Published
2020-12-07 21:46
Modified
2024-09-16 23:27
Severity ?
Summary
Local symlink attack in Unbound and NSD
Impacted products
NLnet LabsUnbound
NLnet LabsNSD
Show details on NVD website


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            "tags": [
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            "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2020-28935.txt"
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            "tags": [
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            "url": "https://www.nlnetlabs.nl/downloads/nsd/CVE-2020-28935.txt"
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            "name": "GLSA-202101-38",
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            "url": "https://security.gentoo.org/glsa/202101-38"
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            "name": "[debian-lts-announce] 20210212 [SECURITY] [DLA 2556-1] unbound1.9 security update",
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            "url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html"
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        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Unbound",
          "vendor": "NLnet Labs",
          "versions": [
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              "status": "affected",
              "version": "\u003c= 1.12.0"
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              "version": "\u003c= 4.3.3"
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        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "We would like to thank Mason Loring Bliss for bringing the issue to our attention."
        }
      ],
      "datePublic": "2020-12-01T00:00:00",
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        {
          "lang": "en",
          "value": "NLnet Labs Unbound, up to and including version 1.12.0, and NLnet Labs NSD, up to and including version 4.3.3, contain a local vulnerability that would allow for a local symlink attack. When writing the PID file, Unbound and NSD create the file if it is not there, or open an existing file for writing. In case the file was already present, they would follow symlinks if the file happened to be a symlink instead of a regular file. An additional chown of the file would then take place after it was written, making the user Unbound/NSD is supposed to run as the new owner of the file. If an attacker has local access to the user Unbound/NSD runs as, she could create a symlink in place of the PID file pointing to a file that she would like to erase. If then Unbound/NSD is killed and the PID file is not cleared, upon restarting with root privileges, Unbound/NSD will rewrite any file pointed at by the symlink. This is a local vulnerability that could create a Denial of Service of the system Unbound/NSD is running on. It requires an attacker having access to the limited permission user Unbound/NSD runs as and point through the symlink to a critical file on the system."
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          "url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2020-28935.txt"
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          "name": "GLSA-202101-38",
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      ],
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cve-2024-8508
Vulnerability from cvelistv5
Published
2024-10-03 16:27
Modified
2024-11-14 21:02
Summary
Unbounded name compression could lead to Denial of Service
Impacted products
NLnet LabsUnbound
Show details on NVD website


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cve-2017-15105
Vulnerability from cvelistv5
Published
2018-01-23 16:00
Modified
2024-09-16 21:56
Severity ?
Summary
A flaw was found in the way unbound before 1.6.8 validated wildcard-synthesized NSEC records. An improperly validated wildcard NSEC record could be used to prove the non-existence (NXDOMAIN answer) of an existing wildcard record, or trick unbound into accepting a NODATA proof.
References
Impacted products
NLnet Labsunbound
Show details on NVD website


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cve-2022-30698
Vulnerability from cvelistv5
Published
2022-08-01 14:13
Modified
2024-09-16 19:35
Severity ?
Summary
Novel "ghost domain names" attack by introducing subdomain delegations
Impacted products
NLnet LabsUnbound
Show details on NVD website


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