chore(deps): update module github.com/sigstore/rekor to v1.5.2 [security] (release-2.4)#158
Merged
adamwg merged 1 commit intoJun 26, 2026
Conversation
crossplane-renovate
Bot
requested review from
a team and
tampakrap
as code owners
crossplane-renovate
Bot
requested review from
phisco
and removed request for
a team
Contributor
Author
ℹ️ Artifact update noticeFile name: go.modIn order to perform the update(s) described in the table above, Renovate ran the
Details:
|
adamwg
approved these changes
Jun 26, 2026
crossplane-renovate
Bot
deleted the
renovate/release-2.4-go-github.com-sigstore-rekor-vulnerability
branch
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This PR contains the following updates:
v1.5.1→v1.5.2Rekor has an OOM Condition due to Unbounded gzip Decompression in Alpine APK Parsing Logic
CVE-2026-48702 / GHSA-47q9-m4ww-924m
More information
Details
Description
The
Package.Unmarshal()function inpkg/types/alpine/apk.godecompresses the signature and control gzip members of an APK file into in-memory buffers without bounding the total decompressed size. The existingmax_apk_metadata_sizecheck (default 1MB) is only applied to individual tar entry header sizes after decompression completes, so it does not prevent a decompression bomb from consuming unbounded heap memory.An attacker can craft a gzip stream that compresses at a ~1000:1 ratio (e.g., 2MB compressed zeros → 2GB decompressed). When submitted as spec.package.content in an Alpine
ProposedEntry, the server decompresses the full payload into memory during request processing, triggering a fatal Go runtime out-of-memory error or OS OOM-kill that cannot be caught by the server's recover() middleware.This is reachable via two unauthenticated endpoints:
Both invoke
V001Entry.Canonicalize()→fetchExternalEntities()→apk.Unmarshal(packageData), which performs the unbounded decompression.Workarounds
There is no effective workaround. Setting
max_request_body_sizereduces but does not eliminate exposure due to the ~1000:1 compression ratio (a 1MB body limit still allows ~1GB heap allocation). Settingmax_apk_metadata_sizehas no effect on this vulnerability since the check is applied after decompression.Severity
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HReferences
This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).
Release Notes
sigstore/rekor (github.com/sigstore/rekor)
v1.5.2Compare Source
Changelog
759b98ealpine: Enforce max size limit on decompression (#2831)c7e77eeSupport restricting kinds on insertion (#2814)a10818afix(trillianclient): strip dns:/// scheme from TLS ServerName in gRPC dial (#2812)8a2f3a2add checks to ensure returned entries match client inputs to rekor-cli (#2799)0e88bacadd nil pointer check to resolve fuzzing crash (#2807)93da954client: surface last-response details after retries are exhausted (#2796)4d67ecdFix internal error detail leakage in 500 responses (#2801)b34ca94add defensive check to ensure tid is in config ahead of getting client (#2795)656c832restapi: include inactiveShards in the homepage total count (#2797)Thanks for all contributors!
Configuration
📅 Schedule: (UTC)
🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
This PR has been generated by Mend Renovate.