CVE-2023-50387

Name
CVE-2023-50387
Description
Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses, aka the "KeyTrap" issue. One of the concerns is that, when there is a zone with many DNSKEY and RRSIG records, the protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://datatracker.ietf.org/doc/html/rfc4035
cve@mitre.org https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html
cve@mitre.org https://kb.isc.org/docs/cve-2023-50387
cve@mitre.org https://news.ycombinator.com/item?id=39367411
cve@mitre.org https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/
cve@mitre.org https://www.athene-center.de/aktuelles/key-trap
cve@mitre.org https://www.isc.org/blogs/2024-bind-security-release/
cve@mitre.org https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/
cve@mitre.org https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/
cve@mitre.org https://news.ycombinator.com/item?id=39372384
cve@mitre.org https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1
cve@mitre.org https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html
cve@mitre.org https://access.redhat.com/security/cve/CVE-2023-50387
cve@mitre.org https://bugzilla.suse.com/show_bug.cgi?id=1219823
cve@mitre.org https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387
cve@mitre.org https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/02/16/2
cve@mitre.org http://www.openwall.com/lists/oss-security/2024/02/16/3
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
cve@mitre.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
cve@mitre.org https://security.netapp.com/advisory/ntap-20240307-0007/
cve@mitre.org https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* enterprise_linux == None == 6.0
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* enterprise_linux == None == 7.0
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* enterprise_linux == None == 8.0
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* enterprise_linux == None == 9.0

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
bind 3.16-main 9.16.48-r0 None fixed
dnsmasq 3.18-main 2.90-r0 Natanael Copa <ncopa@alpinelinux.org> fixed
knot-resolver 3.19-community 5.7.1-r0 Jakub Jirutka <jakub@jirutka.cz> fixed
dnsmasq 3.17-main 2.90-r0 Natanael Copa <ncopa@alpinelinux.org> fixed