THREATPORT/VULNERABILITY/CVE-2020-15123
CRITICAL SEVERITY

CVE-2020-15123

Codecov vulnerability

CVSS
9.3
EPSS
3.8%
EPSS pct
89th
Exploited
No known
In codecov (npm package) before version 3.7.1 the upload method has a command injection vulnerability. Clients of the codecov-node library are unlikely to be aware of this, so they might unwittingly write code that contains a vulnerability. A similar CVE (CVE-2020-7597 for GHSA-5q88-cjfq-g2mh) was issued but the fix was incomplete. It only blocked &, and command injection is still possible using backticks instead to bypass the sanitizer. The attack surface is low in this case. Particularly in the standard use of codecov, where the module is used directly in a build pipeline, not built against as a library in another application that may supply malicious input and perform command injection.
Affected vendor
Codecov
Affected product
Codecov
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Weakness type (CWE)
  • CWE-78 — OS Command Injection
Published
2020-07-20

Risk analysis

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

Its EPSS score of 3.8% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2020-15123

  • Confirm whether Codecov Codecov is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-15123.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-15123

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-15123 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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