CVE-2023-26604

systemd before 247 does not adequately block local privilege escalation for some Sudo configurations, e.g., plausible sudoers files in which the "systemctl status" command may be executed. Specifically, systemd does not set LESSSECURE to 1, and thus other programs may be launched from the less program. This presents a substantial security risk when running systemctl from Sudo, because less executes as root when the terminal size is too small to show the complete systemctl output.

CVSS v3.0 7.8 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://medium.com/@zenmoviefornotification/saidov-maxim-cve-2023-26604-c1232a526ba7	Exploit Third Party Advisory
https://github.com/systemd/systemd/blob/main/NEWS#L4335-L4340	Release Notes
https://blog.compass-security.com/2012/10/dangerous-sudoers-entries-part-2-insecure-functionality/	Exploit Third Party Advisory

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

Information

Published : 2023-03-03 08:15

Updated : 2023-03-10 06:08

NVD link : CVE-2023-26604

Mitre link : CVE-2023-26604

JSON object : View

CWE

NVD-CWE-noinfo

Advertisement

Products Affected

systemd_project

systemd

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://medium.com/@zenmoviefornotification/saidov-maxim-cve-2023-26604-c1232a526ba7", "name": "https://medium.com/@zenmoviefornotification/saidov-maxim-cve-2023-26604-c1232a526ba7", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/systemd/systemd/blob/main/NEWS#L4335-L4340", "name": "https://github.com/systemd/systemd/blob/main/NEWS#L4335-L4340", "tags": ["Release Notes"], "refsource": "MISC"}, {"url": "https://blog.compass-security.com/2012/10/dangerous-sudoers-entries-part-2-insecure-functionality/", "name": "https://blog.compass-security.com/2012/10/dangerous-sudoers-entries-part-2-insecure-functionality/", "tags": ["Exploit", "Third Party Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "systemd before 247 does not adequately block local privilege escalation for some Sudo configurations, e.g., plausible sudoers files in which the \"systemctl status\" command may be executed. Specifically, systemd does not set LESSSECURE to 1, and thus other programs may be launched from the less program. This presents a substantial security risk when running systemctl from Sudo, because less executes as root when the terminal size is too small to show the complete systemctl output."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2023-26604", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}}, "publishedDate": "2023-03-03T16:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "247"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2023-03-10T14:08Z"}