PT-2023-7933 · Go+4 · Go+4
Calmho
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Published
2023-11-08
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Updated
2024-09-09
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CVE-2023-45283
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:C/I:N/A:N |
Name of the Vulnerable Software and Affected Versions
Go versions prior to 1.20.11 and 1.21.4
Go versions 1.20.11 and 1.21.4
Description
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 the 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 the fix, IsAbs now correctly reports paths beginning with ?? as absolute, and VolumeName correctly reports the ?? prefix as a volume name.Recommendations
For Go versions prior to 1.20.11 and 1.21.4, update to Go 1.20.11 or 1.21.4 or later to fix the issue.
For Go versions 1.20.11 and 1.21.4, update to Go 1.21.5 or later to fix the issue.
As a temporary workaround, consider restricting the use of the
filepath package until a patch is available.
Restrict access to the Clean and Join functions to minimize the risk of exploitation.
Avoid using the ?? prefix in paths until the issue is resolved.Exploit
Fix
Path traversal
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Debian
Go
Red Os
Suse