fkie_cve-2024-1931
Vulnerability from fkie_nvd
Published
2024-03-07 10:15
Modified
2024-12-17 16:56
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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
sep@nlnetlabs.nlhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCBRQ7KMSIGBQ6A4SBL5PF326DIJIIV/Product
sep@nlnetlabs.nlhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B2JUIFPA7H75Q2W3VXW2TUNHK6NVGOX4/Product
sep@nlnetlabs.nlhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBR4H7RCVMJ6H76S4LLRSY5EBFTYWGXK/Product
sep@nlnetlabs.nlhttps://lists.freebsd.org/archives/freebsd-security/2024-July/000283.htmlIssue Tracking
sep@nlnetlabs.nlhttps://security.netapp.com/advisory/ntap-20240705-0006/Third Party Advisory
sep@nlnetlabs.nlhttps://www.nlnetlabs.nl/downloads/unbound/CVE-2024-1931.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4VCBRQ7KMSIGBQ6A4SBL5PF326DIJIIV/Product
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B2JUIFPA7H75Q2W3VXW2TUNHK6NVGOX4/Product
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RBR4H7RCVMJ6H76S4LLRSY5EBFTYWGXK/Product
af854a3a-2127-422b-91ae-364da2661108https://lists.freebsd.org/archives/freebsd-security/2024-July/000283.htmlIssue Tracking, Mailing List
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240705-0006/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.nlnetlabs.nl/downloads/unbound/CVE-2024-1931.txtVendor Advisory
Impacted products
Vendor Product Version
nlnetlabs unbound *
fedoraproject fedora 38
fedoraproject fedora 39
fedoraproject fedora 40


To clipboard 

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         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'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.",
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   lastModified: "2024-12-17T16:56:50.630",
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