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CVE Record

CVE-2017-18037: The git repository tag rest resource in Atlassian Bitbucket Server from version 3.7.0 before 4.14.11 (the f...

The git repository tag rest resource in Atlassian Bitbucket Server from version 3.7.0 before 4.14.11 (the fixed version for 4.14.x), from version 5.0.0 before 5.0.9 (the fixed version for 5.0.x), from version 5.1.0 before 5.1.8 (the fixed version for 5.1.x), from version 5.2.0 before 5.2.6 (the fixed version for 5.2.x), from version 5.3.0 before 5.3.4 (the fixed version for 5.3.x), from version 5.4.0 before 5.4.2 (the fixed version for 5.4.x), from version 5.5.0 before 5.5.1 (the fixed version for 5.5.x) and before 5.6.0 allows remote attackers to read arbitrary files via a path traversal vulnerability through the name of a git tag.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2017-18037 affects Atlassian Bitbucket Server versions before listed fixed releases. A remote attacker could use a path traversal flaw in the repository tag REST resource to read arbitrary files. For organizations still running old Bitbucket Server, this could expose source-code platform secrets or host files.

Executive priority

Treat this as a high-priority legacy-platform cleanup if any affected Bitbucket Server remains in use. The business risk is sensitive file disclosure from a source-code management server. Absence from KEV lowers emergency signal, but unsupported or internet-facing deployments should be handled quickly.

Technical view

The flaw is in the Git repository tag REST resource. Vulnerable releases include Bitbucket Server 3.7.0 through specific pre-fixed 4.14.x and 5.x versions. The CVE states attackers can read arbitrary files through the name of a Git tag. Authentication requirements and CVSS details are not provided in the bundle.

Likely exposure

Exposure is limited to Atlassian Bitbucket Server installations in the listed vulnerable version ranges, especially systems reachable by untrusted users or networks. The bundle does not identify Bitbucket Data Center, Cloud, plugins, or other Atlassian products as affected.

Exploitation context

The source bundle says remote attackers can read arbitrary files, but it does not show active exploitation. The CVE is not marked in KEV. Public exploit status, authentication prerequisites, and practical impact details are not established by the provided sources.

Researcher notes

Key missing evidence includes CVSS, CWE, authentication requirements, file-read scope, and exploit telemetry. The affected range and fixed releases are clearly stated. Avoid expanding scope beyond Atlassian Bitbucket Server unless additional vendor sources identify more products.

Mitigation direction

  • Upgrade Bitbucket Server to the applicable fixed version or later.
  • Prioritize 4.14.11, 5.0.9, 5.1.8, 5.2.6, 5.3.4, 5.4.2, 5.5.1, or 5.6.0+.
  • Check Atlassian BSERV-10595 for current vendor guidance before maintenance.
  • Limit Bitbucket Server exposure while upgrade work is pending.

Validation and detection

  • Inventory all Bitbucket Server instances and record exact versions.
  • Compare versions against the vulnerable ranges listed in the CVE.
  • Confirm the repository tag REST resource is not exposed to untrusted networks.
  • Review repository tags for suspicious path-like names.
  • Check Bitbucket access logs for unusual tag REST resource requests.
Prepared
Confidence
medium
Sources
3

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

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

File access behavior lookup

The CVE wording references file access or upload behavior, so file telemetry and web shell 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-2017-18037 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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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
2Source 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
AtlassianBitbucket Serverfrom 3.7.0 prior to 4.14.11, from 5.0.0 prior to 5.0.9, from 5.1.0 prior to 5.1.8, from 5.2.0 prior to 5.2.6, from 5.3.0 prior to 5.3.4, from 5.4.0 prior to 5.4.2, from 5.5.0 prior to 5.5.1Listed
Weakness

CWE details

No CWE listed

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