CVE-2021-39293

Go vulnerability

CVSS

7.5

EPSS

6.9%

EPSS pct

93th

Exploited

No known

In archive/zip in Go before 1.16.8 and 1.17.x before 1.17.1, a crafted archive header (falsely designating that many files are present) can cause a NewReader or OpenReader panic. NOTE: this issue exists because of an incomplete fix for CVE-2021-33196.

Affected vendor

Golang

Affected product

CVSS vector

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

Weakness type (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

Published

2022-01-24

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 6.9% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2021-39293

Confirm whether Golang Go is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-39293.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-39293

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