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Description
A vulnerability was identified in Nomad and Nomad Enterprise (“Nomad”) such that a deny ACL capability could not be applied to a workload’s own variables. If included, the Nomad ACL system will silently fail to block access. This vulnerability, CVE-2023-1296, was fixed in Nomad 1.4.6 and 1.5.1.
Basic information
Type
reviewed
Severity
medium Advisory on GitHub
Open advisory ↗ Repository advisory
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Source code
Browse source ↗ Published (advisory)
2023-07-06 19:24:11 UTC
Updated
2023-07-06 21:54:22 UTC
GitHub reviewed
2023-07-06 21:54:20 UTC
NVD published
2023-03-14
EPSS Score
Score
Percentile
0.17%
37.88%
CVSS Scores
Base score
Version
Severity
Vector
5.3
3.1
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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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:N)
No account or special rights needed—anonymous or random user is enough.
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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
Affected packages (2)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
go
github.com/hashicorp/nomad >= 1.4.0, < 1.4.6
1.4.6
—
go
github.com/hashicorp/nomad = 1.5.0
1.5.1
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cvelogic
Threat Intelligence