CVE-2024-39897
Zot Unvalidated Digest Disclosure Vulnerability Allows Unauthorized Access
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.
INFO
Published Date :
July 9, 2024, 7:15 p.m.
Last Modified :
Nov. 21, 2024, 9:28 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-39897.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-39897 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-39897 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Mar. 03, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CPE Configuration OR *cpe:2.3:a:zotregistry:zot:*:*:*:*:*:*:*:* versions from (excluding) 2.1.0 Added Reference Type CVE: https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df Types: Patch Added Reference Type GitHub, Inc.: https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df Types: Patch Added Reference Type CVE: https://github.com/project-zot/zot/security/advisories/GHSA-55r9-5mx9-qq7r Types: Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/project-zot/zot/security/advisories/GHSA-55r9-5mx9-qq7r Types: Mitigation, Vendor Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df Added Reference https://github.com/project-zot/zot/security/advisories/GHSA-55r9-5mx9-qq7r -
CVE Received by [email protected]
Jul. 09, 2024
Action Type Old Value New Value Added 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. Added Reference GitHub, Inc. https://github.com/project-zot/zot/security/advisories/GHSA-55r9-5mx9-qq7r [No types assigned] Added Reference GitHub, Inc. https://github.com/project-zot/zot/commit/aaee0220e46bdadd12115ac67c19f9d3153eb1df [No types assigned] Added CWE GitHub, Inc. CWE-639 Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-39897 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-39897
weaknesses.