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CVE-2023-31128
No affected components available
NextCloud Cookbook is a recipe library app. Prior to commit a46d9855 on the master branch and commit 489bb744 on the main-0.9.x branch, the pull-checks.yml workflow is vulnerable to command injection attacks because of using an untrusted github.head_ref field. The github.head_ref value is an attacker-controlled value. Assigning the value to zzz";echo${IFS}"hello";# can lead to command injection. Since the permission is not restricted, the attacker has a write-access to the repository. This issue is fixed in commit a46d9855 on the master branch and commit 489bb744 on the main-0.9.x branch. There is no risk for the user of the app within the NextCloud server. This only affects the main repository and possible forks of it. Those who have forked the NextCloud Cookbook repository should make sure their forks are on the latest version to prevent code injection attacks and similar.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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