treeverse lakeFS up to 1.49.x Environment Variable LAKEFS_BLOCKSTORE_S3_DISABLE_PRE_SIGNED_MULTIPART resource consumption

Summaryinfo

A vulnerability classified as problematic was found in treeverse lakeFS up to 1.49.x. Affected by this vulnerability is an unknown functionality of the component Environment Variable Handler. Such manipulation of the argument LAKEFS_BLOCKSTORE_S3_DISABLE_PRE_SIGNED_MULTIPART leads to resource consumption. This vulnerability is referenced as CVE-2025-27100. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in treeverse lakeFS up to 1.49.x. It has been rated as problematic. Affected by this issue is an unknown function of the component Environment Variable Handler. The manipulation of the argument LAKEFS_BLOCKSTORE_S3_DISABLE_PRE_SIGNED_MULTIPART with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

lakeFS is an open-source tool that transforms your object storage into a Git-like repository. In affected versions an authenticated user can crash lakeFS by exhausting server memory. This is an authenticated denial-of-service issue. This problem has been patched in version 1.50.0. Users on versions 1.49.1 and below are affected. Users are advised to upgrade. Users unable to upgrade should either set the environment variable `LAKEFS_BLOCKSTORE_S3_DISABLE_PRE_SIGNED_MULTIPART` to `true` or configure the `disable_pre_signed_multipart` key to true in their config yaml.

The advisory is available at github.com. This vulnerability is handled as CVE-2025-27100 since 02/18/2025. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 1.50.0 eliminates this vulnerability. Applying the patch 3a625752acdf3f8e137bec20451e71d0f9fa82f2 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• treeverse

Name

• lakeFS

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31
• 1.32
• 1.33
• 1.34
• 1.35
• 1.36
• 1.37
• 1.38
• 1.39
• 1.40
• 1.41
• 1.42
• 1.43
• 1.44
• 1.45
• 1.46
• 1.47
• 1.48
• 1.49

License

• open-source

Website

• Product: https://github.com/treeverse/lakeFS/

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