CVE-2023-50868
high · 7.5The 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.
7.5
CVSS
81.7%
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-400
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| netapp | hci_baseboard_management_controller | all versions |
| netapp | h300s | all versions |
| netapp | h410c | all versions |
| netapp | h410s | all versions |
| netapp | h500s | all versions |
| netapp | h700s | all versions |
| netapp | active_iq_unified_manager | all versions |
| netapp | bootstrap_os | all versions |
| netapp | hci_compute_node | all versions |
| powerdns | recursor | < 4.8.5 |
| powerdns | recursor | >= 4.9.0, < 4.9.3 |
| powerdns | recursor | >= 5.0.0, < 5.0.2 |
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux | 8.2 |
| redhat | enterprise_linux | 8.4 |
| debian | debian_linux | 10.0 |
| debian | debian_linux | 11.0 |
| fedoraproject | fedora | 38 |
| fedoraproject | fedora | 39 |
| isc | bind | >= 9.0.0, < 9.16.48 |
| isc | bind | >= 9.9.3, < 9.16.48 |
| isc | bind | >= 9.18.0, < 9.18.24 |
| isc | bind | >= 9.18.11, < 9.18.24 |
| isc | bind | >= 9.19.0, < 9.19.21 |
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-2023-50868
- https://bugzilla.suse.com/show_bug.cgi?id=1219826
- https://datatracker.ietf.org/doc/html/rfc5155
- 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-2023-50868
- 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://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/
- https://security.netapp.com/advisory/ntap-20240307-0008/
- https://www.isc.org/blogs/2024-bind-security-release/
- http://www.openwall.com/lists/oss-security/2024/02/16/2
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2023-50868