vscode-contrib/vscode-versionlens

Shows the latest version for each package using code lens.
Vulnerabilities 2 via 2 paths
Dependencies 422
Source GitHub
Commit d44bfa5d

Find, fix and prevent vulnerabilities in your code.

Severity
  • 2
Status
  • 2
  • 0
  • 0
medium severity

Denial of Service (DoS)

  • Vulnerable module: mem
  • Introduced through: npm@6.5.0

Detailed paths

  • Introduced through: vscode-versionlens@vscode-contrib/vscode-versionlens#d44bfa5d17f419754f29d586a771a371fdda2d2b npm@6.5.0 libnpx@10.2.0 yargs@11.1.0 os-locale@2.1.0 mem@1.1.0

Overview

mem is an optimization used to speed up consecutive function calls by caching the result of calls with identical input.

Affected versions of this package are vulnerable to Denial of Service (DoS). Old results were deleted from the cache and could cause a memory leak.

details

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.

Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.

One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.

When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.

Two common types of DoS vulnerabilities:

  • High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.

  • Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package

Remediation

Upgrade mem to version 4.0.0 or higher.

References

medium severity

Time of Check Time of Use (TOCTOU)

  • Vulnerable module: chownr
  • Introduced through: npm@6.5.0

Detailed paths

  • Introduced through: vscode-versionlens@vscode-contrib/vscode-versionlens#d44bfa5d17f419754f29d586a771a371fdda2d2b npm@6.5.0 chownr@1.0.1
    Remediation: Upgrade to npm@6.6.0.

Overview

chownr is a package that takes the same arguments as fs.chown()

Affected versions of this package are vulnerable to Time of Check Time of Use (TOCTOU). Affected versions of this package are vulnerable toTime of Check Time of Use (TOCTOU) attacks.

It does not dereference symbolic links and changes the owner of the link, which can trick it into descending into unintended trees if a non-symlink is replaced by a symlink at a critical moment:

      fs.lstat(pathChild, function(er, stats) {
        if (er)
          return cb(er)
        if (!stats.isSymbolicLink())
          chownr(pathChild, uid, gid, then)

Remediation

Upgrade chownr to version 1.1.0 or higher.

References