CVE-2023-50387
BIND DNSSEC CPU Denial of Service Vulnerability
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.
INFO
Published Date :
Feb. 14, 2024, 4:15 p.m.
Last Modified :
June 10, 2024, 5:16 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2023-50387 has a 12 public PoC/Exploit
available at Github.
Go to the Public Exploits
tab to see the list.
Affected Products
The following products are affected by CVE-2023-50387
vulnerability.
Even if cvefeed.io
is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-50387
.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Automate investigating CVE Look-ups against GitHub Enterprise Server (GHES)
check cve ghes
None
Dockerfile Roff Java
None
Dockerfile Python HTML
In this repository you can find the files used to try to produce a POC for the CVE-2023-50387
Shell Python
None
HCL
grc4ciso integrates Governance, Risk, and Compliance (GRC), Extended Detection and Response (XDR), Zero Trust, and GPT-4 cybersecurity capabilities into a unified Software-as-a-Service (SaaS) platform
None
asp-net-core csharp docker dockerfile javascript react webapi docker-compose
C# Dockerfile HTML JavaScript CSS
KeyTrap (DNSSEC)
Dockerfile Python
SecDB
Docker image for MarkLogic Server
database docker marklogic
Makefile Shell RobotFramework XQuery
None
Shell
test dnssec ( hackingyseguridad.com )
dnssec test check pruebas dns edns
Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-50387
vulnerability anywhere in the article.
- Cybersecurity News
Microsoft Boosts Email Security with General Availability of Inbound SMTP DANE with DNSSEC
Microsoft announced the general availability of Inbound SMTP DANE with DNSSEC for Exchange Online, marking a significant step forward in email security. This powerful feature combines two robust secur ... Read more
The following table lists the changes that have been made to the
CVE-2023-50387
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 10, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.debian.org/debian-lts-announce/2024/05/msg00011.html [No types assigned] -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Mar. 07, 2024
Action Type Old Value New Value Added Reference MITRE https://security.netapp.com/advisory/ntap-20240307-0007/ [No types assigned] -
CVE Modified by [email protected]
Mar. 04, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZDZFMEKQTZ4L7RY46FCENWFB5MDT263R/ [No types assigned] -
CVE Modified by [email protected]
Feb. 29, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6FV5O347JTX7P5OZA6NGO4MKTXRXMKOZ/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGSLGKUAQTW5JPPZCMF5YPEYALLRUZZ6/ [No types assigned] -
CVE Modified by [email protected]
Feb. 26, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGS7JN6FZXUSTC2XKQHH27574XOULYYJ/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVRDSJVZKMCXKKPP6PNR62T7RWZ3YSDZ/ [No types assigned] -
CVE Modified by [email protected]
Feb. 23, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TEXGOYGW7DBS3N2QSSQONZ4ENIRQEAPG/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQESRWMJCF4JEYJEAKLRM6CT55GLJAB7/ [No types assigned] -
CVE Modified by [email protected]
Feb. 21, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.debian.org/debian-lts-announce/2024/02/msg00006.html [No types assigned] -
Initial Analysis by [email protected]
Feb. 20, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2024/02/16/2 No Types Assigned http://www.openwall.com/lists/oss-security/2024/02/16/2 Mailing List Changed Reference Type http://www.openwall.com/lists/oss-security/2024/02/16/3 No Types Assigned http://www.openwall.com/lists/oss-security/2024/02/16/3 Mailing List Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-50387 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-50387 Third Party Advisory Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1219823 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1219823 Issue Tracking Changed Reference Type https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html No Types Assigned https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html Third Party Advisory Changed Reference Type https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 No Types Assigned https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 Patch Changed Reference Type https://kb.isc.org/docs/cve-2023-50387 No Types Assigned https://kb.isc.org/docs/cve-2023-50387 Third Party Advisory, VDB Entry Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ Mailing List Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ Mailing List Changed Reference Type https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ No Types Assigned https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ Mailing List Changed Reference Type https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html No Types Assigned https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html Mailing List, Third Party Advisory Changed Reference Type https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 No Types Assigned https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 Patch, Vendor Advisory Changed Reference Type https://news.ycombinator.com/item?id=39367411 No Types Assigned https://news.ycombinator.com/item?id=39367411 Third Party Advisory Changed Reference Type https://news.ycombinator.com/item?id=39372384 No Types Assigned https://news.ycombinator.com/item?id=39372384 Issue Tracking Changed Reference Type https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ No Types Assigned https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ Vendor Advisory Changed Reference Type https://www.athene-center.de/aktuelles/key-trap No Types Assigned https://www.athene-center.de/aktuelles/key-trap Third Party Advisory Changed Reference Type https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf No Types Assigned https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf Technical Description, Third Party Advisory Changed Reference Type https://www.isc.org/blogs/2024-bind-security-release/ No Types Assigned https://www.isc.org/blogs/2024-bind-security-release/ Third Party Advisory Changed Reference Type https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ No Types Assigned https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ Press/Media Coverage, Third Party Advisory Changed Reference Type https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ No Types Assigned https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ Patch, Third Party Advisory Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2022_23h2:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* versions up to (excluding) 2.90 Added CPE Configuration OR *cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:* versions up to (excluding) 5.71 Added CPE Configuration OR *cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* versions from (including) 4.8.0 up to (excluding) 4.8.6 *cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* versions from (including) 4.9.0 up to (excluding) 4.9.3 *cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* versions from (including) 5.0.0 up to (excluding) 5.0.2 Added CPE Configuration OR *cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* versions from (including) 9.0.0 up to (including) 9.16.46 *cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* versions from (including) 9.18.0 up to (including) 9.18.22 *cpe:2.3:a:isc:bind:*:*:*:*:-:*:*:* versions from (including) 9.19.0 up to (including) 9.19.20 Added CPE Configuration OR *cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:* versions up to (excluding) 1.19.1 -
CVE Modified by [email protected]
Feb. 19, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BUIP7T7Z4T3UHLXFWG6XIVDP4GYPD3AI/ [No types assigned] Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNNHZSZPG2E7NBMBNYPGHCFI4V4XRWNQ/ [No types assigned] -
CVE Modified by [email protected]
Feb. 18, 2024
Action Type Old Value New Value Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVYA42BLXUCIDLD35YIJPJSHDIADNYMP/ [No types assigned] -
CVE Modified by [email protected]
Feb. 16, 2024
Action Type Old Value New Value Added Reference MITRE http://www.openwall.com/lists/oss-security/2024/02/16/3 [No types assigned] -
CVE Modified by [email protected]
Feb. 16, 2024
Action Type Old Value New Value Added Reference MITRE http://www.openwall.com/lists/oss-security/2024/02/16/2 [No types assigned] -
CVE Modified by [email protected]
Feb. 15, 2024
Action Type Old Value New Value Changed Description Certain DNSSEC aspects of the DNS protocol (in RFC 4035 and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses when there is a zone with many DNSKEY and RRSIG records, aka the "KeyTrap" issue. The protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records. 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. Added Reference MITRE https://www.athene-center.de/fileadmin/content/PDF/Technical_Report_KeyTrap.pdf [No types assigned] Removed Reference MITRE https://datatracker.ietf.org/doc/html/rfc4035 -
CVE Modified by [email protected]
Feb. 15, 2024
Action Type Old Value New Value Added Reference MITRE https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-50387 [No types assigned] Added Reference MITRE https://access.redhat.com/security/cve/CVE-2023-50387 [No types assigned] Added Reference MITRE https://bugzilla.suse.com/show_bug.cgi?id=1219823 [No types assigned] -
CVE Modified by [email protected]
Feb. 15, 2024
Action Type Old Value New Value Added Reference MITRE https://gitlab.nic.cz/knot/knot-resolver/-/releases/v5.7.1 [No types assigned] Added Reference MITRE https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2024q1/017430.html [No types assigned] -
CVE Modified by [email protected]
Feb. 14, 2024
Action Type Old Value New Value Added Reference MITRE https://news.ycombinator.com/item?id=39372384 [No types assigned] -
CVE Received by [email protected]
Feb. 14, 2024
Action Type Old Value New Value Added Description Certain DNSSEC aspects of the DNS protocol (in RFC 4035 and related RFCs) allow remote attackers to cause a denial of service (CPU consumption) via one or more DNSSEC responses when there is a zone with many DNSKEY and RRSIG records, aka the "KeyTrap" issue. The protocol specification implies that an algorithm must evaluate all combinations of DNSKEY and RRSIG records. Added Reference MITRE https://datatracker.ietf.org/doc/html/rfc4035 [No types assigned] Added Reference MITRE https://www.athene-center.de/aktuelles/key-trap [No types assigned] Added Reference MITRE https://nlnetlabs.nl/news/2024/Feb/13/unbound-1.19.1-released/ [No types assigned] Added Reference MITRE https://kb.isc.org/docs/cve-2023-50387 [No types assigned] Added Reference MITRE https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2024-01.html [No types assigned] Added Reference MITRE https://www.theregister.com/2024/02/13/dnssec_vulnerability_internet/ [No types assigned] Added Reference MITRE https://news.ycombinator.com/item?id=39367411 [No types assigned] Added Reference MITRE https://www.securityweek.com/keytrap-dns-attack-could-disable-large-parts-of-internet-researchers/ [No types assigned] Added Reference MITRE https://www.isc.org/blogs/2024-bind-security-release/ [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-50387
is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-50387
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
5.00 }} 1.34%
score
0.92866
percentile