CVE-2023-1636 | Incomplete container isolation

A vulnerability was found in OpenStack Barbican containers. This vulnerability is only applicable to deployments that utilize an all-in-one configuration. Barbican containers share the same CGROUP, USER, and NET namespace with the host system and other OpenStack services. If any service is compromised, it could gain access to the data transmitted to and from Barbican.

Published: 2023-09-24 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-1636 is rated Low Risk (31.8/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.07%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2023-1636

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 2025-11-21 0.16% 0.07% -0.08%
2 2025-11-18 0.07% 0.16% +0.08%
3 2025-03-30 — 0.07% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-1636

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.0 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L 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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.8 3.7 [email protected]
5.0 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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: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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
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.
 3.1 1.4 [email protected]

Weakness enumeration for CVE-2023-1636

GitHub Security Advisory for CVE-2023-1636

GHSA-6rx9-c2rh-3qv4 · Severity: medium · Ecosystem: pip — OpenStack Barbican information disclosure vulnerability

OS Trackers for CVE-2023-1636

vendor priority summary link
debian unimportant CVE-2023-1636 unimportant priority: Debian including 1 source packages (barbican), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-1636
redhat medium — https://access.redhat.com/security/cve/CVE-2023-1636
suse medium — https://www.suse.com/security/cve/CVE-2023-1636/
ubuntu medium CVE-2023-1636 medium priority: Ubuntu including 1 source packages (barbican), 9 status rows across 9 suites (bionic, focal, jammy, kinetic, lunar, mantic, trusty, upstream, xenial): not-affected 6, ignored 2, needs-triage 1. https://ubuntu.com/security/CVE-2023-1636

Affected software / configurations for CVE-2023-1636

Vendor Product Version Raw CPE
openstack barbican — cpe:2.3:a:openstack:barbican:-:*:*:*:*:*:*:*
redhat openstack_platform 16.1 cpe:2.3:a:redhat:openstack_platform:16.1:*:*:*:*:*:*:*
redhat openstack_platform 16.2 cpe:2.3:a:redhat:openstack_platform:16.2:*:*:*:*:*:*:*
redhat openstack_platform 17.0 cpe:2.3:a:redhat:openstack_platform:17.0:*:*:*:*:*:*:*

References for CVE-2023-1636

URL Tags
https://access.redhat.com/security/cve/CVE-2023-1636 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2181765 Issue Tracking Third Party Advisory
cvelogic Threat Intelligence