Authenticated remote denial of service through unbounded zlib decompression in storeAnalysisStatistics

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-84161
StatePUBLISHED
AssignerERIC
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-06 11:17:17 UTC
Updated2026-11-10 15:17:29 UTC
DescriptionWhen an operator enables store.analysis_statistics_dir, a network client with PRODUCT_STORE permission for a product can call that product's storeAnalysisStatistics Thrift-over-HTTP method. CodeChecker 6.29.0 decodes the attacker-controlled Base64 string and passes the complete compressed input to one-shot zlib.decompress(). No maximum decompressed size is enforced. This gives a correctly authorized, non-superuser store account a high-ratio memory and persistent-disk amplification primitive. The complete output is first materialized as a Python bytes object and is then written to the configured statistics directory. A sufficiently scaled payload can exhaust the API worker or host memory and impair CodeChecker availability. The shipped value of store.analysis_statistics_dir is null, so the affected feature is disabled by default. The primary assessment does not rely on authentication being disabled. There is no authorization bypass and no path traversal in this report.

Risk And Classification

Primary CVSS: v3.1 4.9 MEDIUM from 85b1779b-6ecd-4f52-bcc5-73eac4659dcf

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-409 | CWE-770 | CWE-409 CWE-409 Improper handling of highly compressed data (data amplification) | CWE-770 CWE-770 Allocation of resources without limits or throttling

VersionSourceTypeScoreSeverityVector
3.185b1779b-6ecd-4f52-bcc5-73eac4659dcfSecondary4.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS4.9MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ericsson CodeChecker affected 6.29.3 semver Not specified

References

ReferenceSourceLinkTags
github.com/Ericsson/codechecker/security/advisories/GHSA-w57m-6g36-jjwv 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: [email protected] / FSI RED IRIS Team (en)

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