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CVE Record

CVE-2020-7665: Arbitrary File Write via Archive Extraction (Zip Slip)

This affects all versions of package github.com/u-root/u-root/pkg/uzip. It is vulnerable to both leading and non-leading relative path traversal attacks in zip file extraction.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-7665 is a Zip Slip-style flaw in github.com/u-root/u-root/pkg/uzip. If a system extracts a malicious zip with this package, files may be written outside the intended folder, potentially altering important application or system files.

Executive priority

Treat as a focused high-priority remediation where u-root uzip handles external archives. Business urgency is lower where the package is unused or only processes trusted internal archives.

Technical view

The uzip package is reported vulnerable to leading and non-leading relative path traversal during zip extraction. The CVSS 3.1 score is 7.5, reflecting network-reachable, unauthenticated integrity impact. The source bundle does not identify a CWE, fixed release, or confirmed exploitation.

Likely exposure

Exposure is likely limited to Go applications or tooling that import github.com/u-root/u-root/pkg/uzip and extract untrusted or attacker-influenced zip files.

Exploitation context

No active exploitation is stated in the provided sources, and the CVE is not marked in KEV. Practical risk depends on whether affected extraction code processes archives from users, networks, build pipelines, or automation.

Researcher notes

Evidence supports arbitrary file write through zip path traversal in uzip. The bundle does not provide exploit observations, affected downstream products, exact fixed version, or operational mitigations beyond upstream advisory references.

Mitigation direction

  • Inventory use of github.com/u-root/u-root/pkg/uzip across applications and build tooling.
  • Review upstream PR #1817 and Snyk guidance for remediation direction.
  • Avoid extracting untrusted zip archives with affected uzip code until remediated.
  • Ensure extraction logic prevents writes outside the intended destination directory.

Validation and detection

  • Search Go dependency manifests and source imports for github.com/u-root/u-root/pkg/uzip.
  • Identify archive extraction paths reachable from users, APIs, networks, or automation.
  • Confirm the deployed dependency includes upstream traversal protections referenced by the advisory.
  • Run dependency scanning that recognizes SNYK-GOLANG-GITHUBCOMUROOTUROOTPKGUZIP-570441.
Prepared
Confidence
medium
Sources
4

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-2020-7665 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
High
CVSS
7.5 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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
7.5CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.5High
CVSS 3.1 vector shape for CVE-2020-7665Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/agithub.com/u-root/u-root/pkg/uzip0Listed
Weakness

CWE details

No CWE listed

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