Link following in 1E Client
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
1E Client installer can perform arbitrary file deletion on protected files. A non-privileged user could provide a symbolic link or Windows junction to point to a protected directory in the installer that the 1E Client would then clear on service startup. A hotfix is available from the 1E support portal that forces the 1E Client to check for a symbolic link or junction and if it finds one refuses to use that path and instead creates a path involving a random GUID. for v8.1 use hotfix Q23097 for v8.4 use hotfix Q23105 for v9.0 use hotfix Q23115 for SaaS customers, use 1EClient v23.7 plus hotfix Q23121
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| 1E | 1E Client | before 8.1.2.62; before 8.4.1.159; before 9.0.1.88; before 23.7.1.151 | 8.1.2.62, 8.4.1.159, 9.0.1.88, 23.7.1.151 | Patch available | CNA |
- 1E Client Vendor1E Affected before 8.1.2.62; before 8.4.1.159; before 9.0.1.88; before 23.7.1.151 Fixed in 8.1.2.62, 8.4.1.159, 9.0.1.88, 23.7.1.151 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:1e:client:8.1.2.62:*:*:*:*:windows:*:* | 8.1.2.62 | Vulnerable | 1E |
| cpe:2.3:a:1e:client:8.4.1.159:*:*:*:*:windows:*:* | 8.4.1.159 | Vulnerable | 1E |
| cpe:2.3:a:1e:client:9.0.1.88:*:*:*:*:windows:*:* | 9.0.1.88 | Vulnerable | 1E |
| cpe:2.3:a:1e:client:23.7.1.151:*:*:*:*:windows:*:* | 23.7.1.151 | Vulnerable | 1E |
- cpe:2.3:a:1e:client:8.1.2.62:*:*:*:*:windows:*:* Versions 8.1.2.62 Vulnerable ·1E
- cpe:2.3:a:1e:client:8.4.1.159:*:*:*:*:windows:*:* Versions 8.4.1.159 Vulnerable ·1E
- cpe:2.3:a:1e:client:9.0.1.88:*:*:*:*:windows:*:* Versions 9.0.1.88 Vulnerable ·1E
- cpe:2.3:a:1e:client:23.7.1.151:*:*:*:*:windows:*:* Versions 23.7.1.151 Vulnerable ·1E
Remediation
- Fix · CNA 1E Client (1E) Fixed in 8.1.2.62, 8.4.1.159, 9.0.1.88, 23.7.1.151
Timeline
- 2026-10-02 Threatist record created from CVE-2023-45159
- 2026-10-03 Alias added: GHSA-p6vf-3g57-hjv6
References
More 1E Client vulnerabilities
- TI-2023-24176 Elevated Temp Directory Execution in 1E Client CVSS 3.1HIGH 8.8
- TI-2020-16761 The Inventory module of the 1E Client 5.0.0.745 doesn't handle an unquoted path when… CVSS 3.1HIGH 8.8
- TI-2020-12794 The MSI installer in 1E Client 4.1.0.267 and 5.0.0.745 allows remote authenticated users… CVSS 3.1HIGH 8.8
- TI-2020-16760 The Inventory module of the 1E Client 5.0.0.745 doesn't handle an unquoted path when… CVSS 3.1HIGH 8.8
- TI-2020-16759 The %PROGRAMDATA%\1E\Client directory in 1E Client 5.0.0.745 and 4.1.0.267 allows remote… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2023-45159 · CVE Program
- CVE-2023-45159 · NVD
- FIRST EPSS
- GHSA-p6vf-3g57-hjv6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences