CVE-2023-0845 | Consul Server Panic when Ingress and API Gateways Configured with Peering

Consul and Consul Enterprise allowed an authenticated user with service:write permissions to trigger a workflow that causes Consul server and client agents to crash under certain circumstances. This vulnerability was fixed in Consul 1.14.5.

Published: 2023-03-09 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-0845 is rated Moderate Risk (40.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.00%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-0845

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.39% 1.00% +0.61%
2 2026-03-27 0.32% 0.39% +0.07%
3 2025-11-21 — 0.32% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-0845

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2023-0845

GitHub Security Advisory for CVE-2023-0845

GHSA-wj6x-hcc2-f32j · Severity: medium · Ecosystem: go — Consul Server Panic when Ingress and API Gateways Configured with Peering Connections

OS Trackers for CVE-2023-0845

vendor priority summary link
alpine medium CVE-2023-0845: 1 source package rows (consul); 6 state rows across 2 repos (3.17-community, edge-community); fixed 0, open 6. https://security.alpinelinux.org/vuln/CVE-2023-0845
debian unimportant CVE-2023-0845 unimportant priority: Debian including 1 source packages (consul), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2023-0845
redhat medium — https://access.redhat.com/security/cve/CVE-2023-0845
ubuntu medium CVE-2023-0845 medium priority: Ubuntu including 1 source packages (consul), 12 status rows across 12 suites (bionic, focal, jammy, kinetic, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 4, ignored 4, needs-triage 3, not-affected 1. https://ubuntu.com/security/CVE-2023-0845

Affected software / configurations for CVE-2023-0845

Vendor Product Version Raw CPE
hashicorp consul < 1.14.5 cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*

References for CVE-2023-0845

cvelogic Threat Intelligence