CVE-2023-45283
Insecure parsing of Windows paths with a \??\ prefix in path/filepath
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
The filepath package does not recognize paths with a \??\ prefix as special. On Windows, a path beginning with \??\ is a Root Local Device path equivalent to a path beginning with \\?\. Paths with a \??\ prefix may be used to access arbitrary locations on the system. For example, the path \??\c:\x is equivalent to the more common path c:\x. Before fix, Clean could convert a rooted path such as \a\..\??\b into the root local device path \??\b. Clean will now convert this to .\??\b. Similarly, Join(\, ??, b) could convert a seemingly innocent sequence of path elements into the root local device path \??\b. Join will now convert this to \.\??\b. In addition, with fix, IsAbs now correctly reports paths beginning with \??\ as absolute, and VolumeName correctly reports the \??\ prefix as a volume name. UPDATE: Go 1.20.11 and Go 1.21.4 inadvertently changed the definition of the volume name in Windows paths starting with \?, resulting in filepath.Clean(\?\c:) returning \?\c: rather than \?\c:\ (among other effects). The previous behavior has been restored.
El paquete filepath no reconoce las rutas con el prefijo \??\ como especiales. En Windows, una ruta que comienza con \??\ es una ruta de dispositivo local raíz equivalente a una ruta que comienza con \\?\. Se pueden utilizar rutas con un prefijo \??\ para acceder a ubicaciones arbitrarias en el sistema. Por ejemplo, la ruta \??\c:\x es equivalente a la ruta más común c:\x. Antes de la solución, Clean podía convertir una ruta raíz como \a\..\??\b en la ruta raíz del dispositivo local \??\b. Clean ahora convertirá esto a .\??\b. De manera similar, Join(\, ??, b) podría convertir una secuencia aparentemente inocente de elementos de ruta en la ruta del dispositivo local raíz \??\b. Unirse ahora convertirá esto a \.\??\b. Además, con la solución, IsAbs ahora informa correctamente las rutas que comienzan con \??\ como absolutas, y VolumeName informa correctamente el prefijo \??\ como nombre de volumen.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2023-10-06 CVE Reserved
- 2023-11-09 CVE Published
- 2023-12-15 EPSS Updated
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC
References (9)
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://go.dev/cl/540277 | 2023-12-14 | |
| https://go.dev/issue/63713 | 2023-12-14 | |
| https://groups.google.com/g/golang-announce/c/4tU8LZfBFkY | 2023-12-14 | |
| https://pkg.go.dev/vuln/GO-2023-2185 | 2023-12-14 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Golang Search vendor "Golang" | Go Search vendor "Golang" for product "Go" | < 1.20.11 Search vendor "Golang" for product "Go" and version " < 1.20.11" | - |
Affected
| in | Microsoft Search vendor "Microsoft" | Windows Search vendor "Microsoft" for product "Windows" | - | - |
Safe
|
| Golang Search vendor "Golang" | Go Search vendor "Golang" for product "Go" | >= 1.21.0-0 < 1.21.4 Search vendor "Golang" for product "Go" and version " >= 1.21.0-0 < 1.21.4" | - |
Affected
| in | Microsoft Search vendor "Microsoft" | Windows Search vendor "Microsoft" for product "Windows" | - | - |
Safe
|