Vulnerabilities

 2 via 2 paths

Dependencies

 54

Source

 GitHub

Commit

 6fad5bae

Find, fix and prevent vulnerabilities in your code.

Test and protect my applications
Severity
  • 1
  • 1
Status
  • 2
  • 0
  • 0

high severity

Improper Privilege Management

  • Vulnerable module: shelljs
  • Introduced through: shelljs@0.7.8

Detailed paths

  • Introduced through: lecture-note-2.0@nus-mtp/sashimi-note#6fad5baeda9dda22a48db20cb41c7303bb82b4ed › shelljs@0.7.8
    Remediation: Upgrade to shelljs@0.8.5.

Overview

shelljs is a wrapper for the Unix shell commands for Node.js.

Affected versions of this package are vulnerable to Improper Privilege Management. When ShellJS is used to create shell scripts which may be running as root, users with low-level privileges on the system can leak sensitive information such as passwords (depending on implementation) from the standard output of the privileged process OR shutdown privileged ShellJS processes via the exec function when triggering EACCESS errors.

Note: Thi only impacts the synchronous version of shell.exec().

Remediation

Upgrade shelljs to version 0.8.5 or higher.

References

Improper Privilege Management vulnerability report

medium severity

Missing Release of Resource after Effective Lifetime

  • Vulnerable module: inflight
  • Introduced through: shelljs@0.7.8

Detailed paths

  • Introduced through: lecture-note-2.0@nus-mtp/sashimi-note#6fad5baeda9dda22a48db20cb41c7303bb82b4ed › shelljs@0.7.8 › glob@7.2.3 › inflight@1.0.6

Overview

Affected versions of this package are vulnerable to Missing Release of Resource after Effective Lifetime via the makeres function due to improperly deleting keys from the reqs object after execution of callbacks. This behavior causes the keys to remain in the reqs object, which leads to resource exhaustion.

Exploiting this vulnerability results in crashing the node process or in the application crash.

Note: This library is not maintained, and currently, there is no fix for this issue. To overcome this vulnerability, several dependent packages have eliminated the use of this library.

To trigger the memory leak, an attacker would need to have the ability to execute or influence the asynchronous operations that use the inflight module within the application. This typically requires access to the internal workings of the server or application, which is not commonly exposed to remote users. Therefore, “Attack vector” is marked as “Local”.

PoC

const inflight = require('inflight');

function testInflight() {
  let i = 0;
  function scheduleNext() {
    let key = `key-${i++}`;
    const callback = () => {
    };
    for (let j = 0; j < 1000000; j++) {
      inflight(key, callback);
    }

    setImmediate(scheduleNext);
  }


  if (i % 100 === 0) {
    console.log(process.memoryUsage());
  }

  scheduleNext();
}

testInflight();

Remediation

There is no fixed version for inflight.

References

Missing Release of Resource after Effective Lifetime vulnerability report