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CVE Record

CVE-2020-15087: Privilege escalation in Presto

In Presto before version 337, authenticated users can bypass authorization checks by directly accessing internal APIs. This impacts Presto server installations with secure internal communication configured. This does not affect installations that have not configured secure internal communication, as these installations are inherently insecure. This only affects Presto server installations. This does NOT affect clients such as the CLI or JDBC driver. This vulnerability has been fixed in version 337. Additionally, this issue can be mitigated by blocking network access to internal APIs on the coordinator and workers.

HighCVSS 7.4Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

Presto server versions before 337 can let a user bypass intended authorization by reaching internal APIs directly. The business concern is unauthorized access to sensitive query or platform data where vulnerable servers expose those APIs. The issue is fixed in 337, and network controls around internal APIs are an explicit mitigation.

Executive priority

Prioritize remediation for production Presto clusters handling sensitive data, especially where user networks can reach coordinator or worker internal APIs. Upgrade or isolate promptly, but do not assume internet-wide exploitation from the provided evidence.

Technical view

CVE-2020-15087 is CWE-285 improper authorization in Presto server. Sources state authenticated users can bypass authorization checks by directly accessing internal APIs. It affects Presto server installations before version 337 with secure internal communication configured, not CLI or JDBC clients.

Likely exposure

Exposure is likely limited to Presto server deployments below version 337 where secure internal communication is configured and coordinator or worker internal APIs are network-reachable by users or untrusted systems.

Exploitation context

The provided sources do not report active exploitation, and the CVE is not listed as KEV. The described attack requires access to internal Presto APIs; details sufficient for weaponization are not included here.

Researcher notes

The affected condition is narrow: Presto server before 337 with secure internal communication configured. Sources also note installations without secure internal communication are inherently insecure but not affected by this specific flaw. No exploit proof, payload, or active campaign evidence is provided.

Mitigation direction

  • Upgrade affected Presto server installations to version 337 or later.
  • Block network access to internal APIs on coordinators and workers.
  • Restrict Presto server management and worker networks to trusted infrastructure.
  • Review the GitHub advisory and release notes before production changes.
  • Do not treat CLI or JDBC clients as affected products.

Validation and detection

  • Inventory all Presto server versions and flag any below 337.
  • Confirm whether secure internal communication is configured on each server deployment.
  • Review firewall and segmentation rules protecting coordinator and worker internal APIs.
  • Verify exposed services from user and application network zones.
  • Confirm remediation by documenting upgraded versions or blocked internal API access.
Prepared
Confidence
high
Sources
4

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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cwe · low confidence lookup

CWE-285: Exact CWE lookup

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description · low confidence lookup

Privilege behavior lookup

The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2020-15087 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.4 (3.1)
Known Exploited
No
Published

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

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.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
7.4CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N2.84Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.4High
CVSS 3.1 vector shape for CVE-2020-15087Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
prestosqlPresto< 337Listed
Weakness

CWE details

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

CWE-285 · source CWE mapping

Improper Authorization

Improper Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.