Vulnerability Information
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Vulnerability Title
Cache driver GetBlob() allows read access to any blob without access control check
Vulnerability Description
zot is an OCI image registry. Prior to 2.1.0, the cache driver `GetBlob()` allows read access to any blob without access control check. If a Zot `accessControl` policy allows users read access to some repositories but restricts read access to other repositories and `dedupe` is enabled (it is enabled by default), then an attacker who knows the name of an image and the digest of a blob (that they do not have read access to), they may maliciously read it via a second repository they do have read access to. This attack is possible because [`ImageStore.CheckBlob()` calls `checkCacheBlob()`](https://github.com/project-zot/zot/blob/v2.1.0-rc2/pkg/storage/imagestore/imagestore.go#L1158-L1159) to find the blob a global cache by searching for the digest. If it is found, it is copied to the user requested repository with `copyBlob()`. The attack may be mitigated by configuring "dedupe": false in the "storage" settings. The vulnerability is fixed in 2.1.0.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Vulnerability Type
通过用户控制密钥绕过授权机制
Vulnerability Title
zot 安全漏洞
Vulnerability Description
zot是The zot Project开源的一个 OCI 图像注册表。 zot 2.1.0之前版本存在安全漏洞，该漏洞源于缓存驱动程序GetBlob()允许对任何blob进行读取访问，而无需进行访问控制检查。
CVSS Information
N/A
Vulnerability Type
N/A