Google Go up to 1.23.9/1.24.3 File os.OpenFile symlink

Summaryinfo

A vulnerability, which was classified as critical, has been found in Google Go up to 1.23.9/1.24.3. This affects the function os.OpenFile of the component File Handler. Performing a manipulation results in symlink. This vulnerability is cataloged as CVE-2025-0913. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Google Go up to 1.23.9/1.24.3. This affects the function os.OpenFile of the component File Handler. The manipulation with an unknown input leads to a symlink vulnerability. CWE is classifying the issue as CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.

The weakness was shared by JunYoung Park. It is possible to read the advisory at go.dev. This vulnerability is uniquely identified as CVE-2025-0913. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/12/2025).

The vulnerability scanner Nessus provides a plugin with the ID 238043 (SUSE SLED15 / SLES15 / openSUSE 15 Security Update : go1.24 (SUSE-SU-2025:01846-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.23.10 or 1.24.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (238043) and CERT Bund (WID-SEC-2025-1205). Be aware that VulDB is the high quality source for vulnerability data.

Affected

• Amazon Linux 2
• Red Hat Enterprise Linux
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• Open Source Arch Linux
• SUSE openSUSE
• Golang Go
• RESF Rocky Linux
• IBM App Connect Enterprise
• IBM MQ
• Red Hat OpenShift

Productinfo

Type

• Programming Language Software

Vendor

• Google

Name

• Go

Version

• 1.23.0
• 1.23.1
• 1.23.2
• 1.23.3
• 1.23.4
• 1.23.5
• 1.23.6
• 1.23.7
• 1.23.8
• 1.23.9
• 1.24.0
• 1.24.1
• 1.24.2
• 1.24.3

License

• open-source

Website

• Vendor: https://www.google.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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