Skip to content
Noroxi
NVD / CVE Program· CNA redhat

CVE-2023-7008: Systemd-resolved: unsigned name response in signed zone is not refused when dnssec=yes

Noroxi assessment

Priority: Monitor (action score 23/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.84% (FIRST EPSS); higher than 57.8% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: systemd (AlmaLinux:8) 239-82.el8; systemd-container (AlmaLinux:8) 239-82.el8; systemd-devel (AlmaLinux:8) 239-82.el8.

Low priority for now. Upgrade to systemd (AlmaLinux:8) 239-82.el8; systemd-container (AlmaLinux:8) 239-82.el8; systemd-devel (AlmaLinux:8) 239-82.el8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A vulnerability was found in systemd-resolved. This issue may allow systemd-resolved to accept records of DNSSEC-signed domains even when they have no signature, allowing man-in-the-middles (or the upstream DNS resolver) to manipulate records.

MediumCVSS 5.9 · v3.1—No exploit Fix available
Published
Dec 23, 2023
Updated
Oct 14, 2026
EPSS
0.8% · 57th percentile

Report tools

JSON

Action score

23

Monitor

Low priority for now.

CVSS
23 / 40 · 5.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

CNA vs NVD score

NVD
5.9
CNA · redhat
5.9
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2023-7008

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for systemd project records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
systemd projectsystemd
debiandebian linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • systemd project systemd25

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Cryostat 2

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • 0:239-82.el8 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 0:252-32.el9_4 and laternot affected · rpm
    • 0:252-32.el9_4 and laternot affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8systemdbefore 239-82.el8239-82.el8
AlmaLinux:8systemd-containerbefore 239-82.el8239-82.el8
AlmaLinux:8systemd-develbefore 239-82.el8239-82.el8
AlmaLinux:8systemd-journal-remotebefore 239-82.el8239-82.el8
AlmaLinux:8systemd-libsbefore 239-82.el8239-82.el8
AlmaLinux:8systemd-pambefore 239-82.el8239-82.el8
AlmaLinux:8systemd-testsbefore 239-82.el8239-82.el8
AlmaLinux:8systemd-udevbefore 239-82.el8239-82.el8
AlmaLinux:9rhel-net-naming-sysattrsbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemdbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-boot-unsignedbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-containerbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-develbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-journal-remotebefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-libsbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-oomdbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-pambefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-resolvedbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-rpm-macrosbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
AlmaLinux:9systemd-udevbefore 252-32.el9_4.alma.1252-32.el9_4.alma.1
Debian:11systemdbefore 247.3-7+deb11u6247.3-7+deb11u6
Debian:12systemdbefore 252.21-1~deb12u1252.21-1~deb12u1
Debian:13systemdbefore 255.1-3255.1-3
openSUSE:Leap Micro 5.5systemdbefore 249.17-150400.8.43.1249.17-150400.8.43.1

+44

Same product

systemd project: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-9445In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small.
    46Plan
  • CVE-2018-21029systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS.
    40Plan
  • CVE-2015-7510Stack-based buffer overflow in the getpwnam and getgrnam functions of the NSS module nss-mymachines in systemd.
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-31438Jun 13, 2023 · An issue was discovered in systemd 253.
    21Monitor
  • ← EarlierCVE-2023-31439Jun 13, 2023 · An issue was discovered in systemd 253.
    21Monitor
  • Later →CVE-2025-4598May 30, 2025 · Systemd-coredump: race condition that allows a local attacker to crash a suid program and gain read access to the resulting core dump
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:rhel-net-naming-sysattrs252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-boot-unsigned252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-container252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-devel252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-journal-remote252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-libs252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-oomd252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-pam252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-resolved252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-rpm-macros252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
almalinux:systemd-udev252-32.el9_4.alma.1 · AlmaLinux:9Package registry (OSV)
debian:systemd252.21-1~deb12u1 · Debian:12Package registry (OSV)
opensuse:systemd249.17-150400.8.43.1 · openSUSE:Leap Micro 5.5Package registry (OSV)
red hat:systemd-boot-unsigned-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-container-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-debugsource0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-devel0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-journal-remote0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-journal-remote-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-libs-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-oomd-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-pam-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-resolved-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
red hat:systemd-standalone-sysusers-debuginfo0:252-32.el9_4 · Red Hat:enterprise_linux:9::appstreamPackage registry (OSV)
rocky linux:systemd0:252-32.el9_4 · Rocky Linux:9Package registry (OSV)
suse:systemd249.17-150400.8.43.1 · SUSE:Linux Enterprise Micro 5.3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-300 · Channel Accessible by Non-Endpoint

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records