NVD / CVE Program· CNA mitre

CVE-2023-27320: Sudo before 1.9.13p2 has a double free in the per-command chroot feature.

Noroxi assessment

Priority: Monitor (action score 28/100)

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: 1.6% (FIRST EPSS); higher than 76.8% of all records.
Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
Fixed version: sudo (Alpine:v3.17) 1.9.12_p2-r1; sudo (Debian:12) 1.9.13p3-1; sudo (openSUSE:Leap Micro 5.3) 1.9.9-150400.4.26.1.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to sudo (Alpine:v3.17) 1.9.12_p2-r1; sudo (Debian:12) 1.9.13p3-1; sudo (openSUSE:Leap Micro 5.3) 1.9.9-150400.4.26.1 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

HighCVSS 7.2 · v3.1—No exploit Fix available

Memory safety

Published: Feb 28, 2023
Updated: Jun 17, 2026
EPSS: 1.6% · 76th percentile
CWE: CWE-415

Report tools

JSON

Action score

Monitor

Low priority for now.

CVSS: 28 / 40 · 7.2 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.6%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

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

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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.

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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.

Vendor	Product	CPE
sudo project	sudo	cpe:2.3:a:sudo_project:sudo
fedoraproject	fedora	cpe:2.3:o:fedoraproject:fedora

Affected versions

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

fedoraproject fedora36
fedoraproject fedora37
fedoraproject fedora38
sudo project sudo1.9.8 and later · before 1.9.13
sudo project sudo1.9.13

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
Alpine:v3.17	sudo	from 1.9.8 · before 1.9.12_p2-r1	1.9.12_p2-r1
Debian:12	sudo	before 1.9.13p3-1	1.9.13p3-1
openSUSE:Leap Micro 5.3	sudo	before 1.9.9-150400.4.26.1	1.9.9-150400.4.26.1
openSUSE:Tumbleweed	sudo	before 1.9.13p3-2.1	1.9.13p3-2.1
SUSE:Linux Enterprise Micro 5.3	sudo	before 1.9.9-150400.4.26.1	1.9.9-150400.4.26.1

Same product

sudo project: all records

Other highest-scoring records for the same primary product.

CVE-2021-3156Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root KEV
91Now
CVE-2025-32463Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf from a user-controlled directory is used with the -KEV
78This week
CVE-2019-14287In Sudo before 1.8.28, an attacker with access to a Runas ALL sudoer account can bypass certain policy blacklists and session PAM modules, a
54Plan

Published before and after this one in the same product

← EarlierCVE-2022-43995Nov 2, 2022 · Sudo 1.8.0 through 1.9.12, with the crypt() password backend, contains a plugins/sudoers/auth/passwd.c array-out-of-bounds error that can re
28Monitor
← EarlierCVE-2023-22809Jan 18, 2023 · In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_ED
48Plan
Later →CVE-2023-28486Mar 15, 2023 · Sudo before 1.9.13 does not escape control characters in log messages.
21Monitor

Remediation

Which version to upgrade to

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

Product / package	Fixed version	Source
alpine:sudo	1.9.12_p2-r1 · Alpine:v3.17	Package registry (OSV)
debian:sudo	1.9.13p3-1 · Debian:12	Package registry (OSV)
opensuse:sudo	1.9.9-150400.4.26.1 · openSUSE:Leap Micro 5.3	Package registry (OSV)
suse:sudo	1.9.9-150400.4.26.1 · SUSE:Linux Enterprise Micro 5.3	Package 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.

No history yet (it accumulates with the daily EPSS job).

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).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

TR-23-0116 · Mar 1, 2023(Linux Sudo Zafiyeti)

All national notices →

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
Administrator privileges are required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: High
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-415 · Double Free

CVSS vector

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

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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:45 PM UTC

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

References

www.openwall.com/lists/oss-security/2023/03/01/8

Show all references (6 more)

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

All records