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CVE-2018-12088: S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who c...

S3QL before 2.27 mishandles checksumming, and consequently allows replay attacks in which an attacker who controls the backend can present old versions of the filesystem metadata database as up-to-date, temporarily inject zero-valued bytes into files, or temporarily hide parts of files. This is related to the checksum_basic_mapping function.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

S3QL versions before 2.27 could trust stale or altered backend data as current. If an attacker controls the storage backend, they could temporarily roll back filesystem metadata, insert zero bytes, or hide file portions. The main business risk is data integrity and reliability, not confirmed mass exploitation.

Executive priority

Treat this as a targeted integrity risk. It is not supported as actively exploited, but older S3QL deployments depending on untrusted backends should be reviewed and upgraded during normal vulnerability remediation cycles.

Technical view

The CVE describes flawed checksumming in S3QL before 2.27, related to checksum_basic_mapping. Backend control can enable replay of old filesystem metadata databases and temporary file-content manipulation. Public data lacks CVSS, CWE, CPE, and detailed vendor advisory context.

Likely exposure

Exposure is most likely where S3QL before 2.27 is used with a backend that could be malicious, compromised, shared, or insufficiently controlled. The source bundle does not identify packaged distributions, CPEs, or downstream affected products.

Exploitation context

Active exploitation is not supported by the provided sources, and the CVE is not listed as KEV. The described prerequisite is significant: attacker control of the backend. Impact can still matter where backend trust is weak or storage integrity is safety-critical.

Researcher notes

The public record is sparse: no CVSS vector, CWE, CPE, or exploit evidence is included. Analysis should focus on confirming S3QL version, backend trust assumptions, and whether commit 85aba5c2d5c81453a73a50ed638adaeef0521020 is present in deployed builds.

Mitigation direction

  • Inventory systems using S3QL and identify versions older than 2.27.
  • Prioritize upgrading S3QL deployments to 2.27 or later after checking vendor guidance.
  • Restrict backend access to trusted identities and review storage-provider permissions.
  • Monitor backend object changes for unexpected rollback, replacement, or metadata anomalies.

Validation and detection

  • Confirm whether S3QL is installed and record the running version.
  • Identify which backend each S3QL filesystem uses and who can modify it.
  • Review audit logs for unusual metadata database replacement or object rollback events.
  • Check vendor issue, mailing list, and commit references for environment-specific guidance.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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description · low confidence lookup

Database behavior lookup

The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-12088 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.