CVE-2023-50868
Vulnerability from cvelistv5
Published
2024-02-14 00:00
Modified
2024-08-02 22:23
Severity ?
Summary
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
References
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/02/16/2
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2024/02/16/3
cve@mitre.orghttps://access.redhat.com/security/cve/CVE-2023-50868
cve@mitre.orghttps://bugzilla.suse.com/show_bug.cgi?id=1219826
cve@mitre.orghttps://datatracker.ietf.org/doc/html/rfc5155
cve@mitre.orghttps://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html
cve@mitre.orghttps://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1
cve@mitre.orghttps://kb.isc.org/docs/cve-2023-50868
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
cve@mitre.orghttps://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html
cve@mitre.orghttps://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20240307-0008/
cve@mitre.orghttps://www.isc.org/blogs/2024-bind-security-release/
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/02/16/2
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/02/16/3
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-50868
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.suse.com/show_bug.cgi?id=1219826
af854a3a-2127-422b-91ae-364da2661108https://datatracker.ietf.org/doc/html/rfc5155
af854a3a-2127-422b-91ae-364da2661108https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html
af854a3a-2127-422b-91ae-364da2661108https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1
af854a3a-2127-422b-91ae-364da2661108https://kb.isc.org/docs/cve-2023-50868
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
af854a3a-2127-422b-91ae-364da2661108https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html
af854a3a-2127-422b-91ae-364da2661108https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240307-0008/
af854a3a-2127-422b-91ae-364da2661108https://www.isc.org/blogs/2024-bind-security-release/
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

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    "datePublished": "2024-02-14T00:00:00",
    "dateReserved": "2023-12-14T00:00:00",
    "dateUpdated": "2024-08-02T22:23:43.905Z",
    "state": "PUBLISHED"
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The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.\"},{\"lang\":\"es\",\"value\":\"El aspecto Closest Encloser Proof del protocolo DNS (en RFC 5155 cuando se omite la gu\u00eda RFC 9276) permite a atacantes remotos provocar una denegaci\u00f3n de servicio (consumo de CPU para c\u00e1lculos SHA-1) a trav\u00e9s de respuestas DNSSEC en un ataque de subdominio aleatorio, tambi\u00e9n conocido como \\\" Problema NSEC3\\\". La especificaci\u00f3n RFC 5155 implica que un algoritmo debe realizar miles de iteraciones de una funci\u00f3n hash en determinadas situaciones.\"}],\"metrics\":{},\"references\":[{\"url\":\"http://www.openwall.com/lists/oss-security/2024/02/16/2\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/02/16/3\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://access.redhat.com/security/cve/CVE-2023-50868\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://bugzilla.suse.com/show_bug.cgi?id=1219826\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://datatracker.ietf.org/doc/html/rfc5155\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://kb.isc.org/docs/cve-2023-50868\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20240307-0008/\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://www.isc.org/blogs/2024-bind-security-release/\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/02/16/2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/02/16/3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://access.redhat.com/security/cve/CVE-2023-50868\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://bugzilla.suse.com/show_bug.cgi?id=1219826\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://datatracker.ietf.org/doc/html/rfc5155\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://kb.isc.org/docs/cve-2023-50868\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://security.netapp.com/advisory/ntap-20240307-0008/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.isc.org/blogs/2024-bind-security-release/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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