CVE-2023-50387
high · 7.5Certain 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.
7.5
CVSS
100.0%
EPSS (exploit prob.)
100th
EPSS percentile
2024-02-14
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-770
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 9.0 |
| microsoft | windows_server_2008 | r2 |
| microsoft | windows_server_2012 | all versions |
| microsoft | windows_server_2012 | r2 |
| microsoft | windows_server_2016 | all versions |
| microsoft | windows_server_2019 | all versions |
| microsoft | windows_server_2022 | all versions |
| microsoft | windows_server_2022_23h2 | all versions |
| fedoraproject | fedora | 39 |
| thekelleys | dnsmasq | < 2.90 |
| nic | knot_resolver | < 5.71 |
| powerdns | recursor | >= 4.8.0, < 4.8.6 |
| powerdns | recursor | >= 4.9.0, < 4.9.3 |
| powerdns | recursor | >= 5.0.0, < 5.0.2 |
| isc | bind | >= 9.0.0, <= 9.16.46 |
| isc | bind | >= 9.18.0, <= 9.18.22 |
| isc | bind | >= 9.19.0, <= 9.19.20 |
| nlnetlabs | unbound | < 1.19.1 |
Check a specific version with /api/v1/cve/match.
References
- http://www.openwall.com/lists/oss-security/2024/02/16/2
- http://www.openwall.com/lists/oss-security/2024/02/16/3
- https://access.redhat.com/security/cve/CVE-2023-50387
- https://bugzilla.suse.com/show_bug.cgi?id=1219823
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html
- https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1
- https://kb.isc.org/docs/cve-2023-50387
- https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html
- https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387
- https://news.ycombinator.com/item?id=39367411
- https://news.ycombinator.com/item?id=39372384
- https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/
- https://security.netapp.com/advisory/ntap-20240307-0007/
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2023-50387