Find, fix and prevent vulnerabilities in your code.
medium severity
- Vulnerable module: decompress-tar
- Introduced through: decompress@4.2.1, @serverless/utils@6.15.0 and others
Detailed paths
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › decompress@4.2.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › decompress@4.2.1 › decompress-tarbz2@4.1.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › decompress@4.2.1 › decompress-targz@4.1.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/utils@6.15.0 › decompress@4.2.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/utils@6.15.0 › decompress@4.2.1 › decompress-tarbz2@4.1.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/utils@6.15.0 › decompress@4.2.1 › decompress-targz@4.1.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/dashboard-plugin@7.2.3 › @serverless/utils@6.15.0 › decompress@4.2.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/dashboard-plugin@7.2.3 › @serverless/utils@6.15.0 › decompress@4.2.1 › decompress-tarbz2@4.1.1 › decompress-tar@4.1.1
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/dashboard-plugin@7.2.3 › @serverless/utils@6.15.0 › decompress@4.2.1 › decompress-targz@4.1.1 › decompress-tar@4.1.1
Overview
decompress-tar is a tar plugin for decompress.
Affected versions of this package are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip). It is possible to bypass the security measures provided by decompress and conduct ZIP path traversal through symlinks.
PoC
const decompress = require('decompress');
decompress('slip.tar.gz', 'dist').then(files => {
console.log('done!');
});
Details
It is exploited using a specially crafted zip archive, that holds path traversal filenames. When exploited, a filename in a malicious archive is concatenated to the target extraction directory, which results in the final path ending up outside of the target folder. For instance, a zip may hold a file with a "../../file.exe" location and thus break out of the target folder. If an executable or a configuration file is overwritten with a file containing malicious code, the problem can turn into an arbitrary code execution issue quite easily.
The following is an example of a zip archive with one benign file and one malicious file. Extracting the malicous file will result in traversing out of the target folder, ending up in /root/.ssh/
overwriting the authorized_keys
file:
+2018-04-15 22:04:29 ..... 19 19 good.txt
+2018-04-15 22:04:42 ..... 20 20 ../../../../../../root/.ssh/authorized_keys
Remediation
There is no fixed version for decompress-tar
.
References
medium severity
- Vulnerable module: inflight
- Introduced through: archiver@5.3.2, @serverless/dashboard-plugin@7.2.3 and others
Detailed paths
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › archiver@5.3.2 › archiver-utils@2.1.0 › glob@7.2.3 › inflight@1.0.6
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/dashboard-plugin@7.2.3 › yamljs@0.3.0 › glob@7.2.3 › inflight@1.0.6
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/platform-client@4.5.1 › archiver@5.3.2 › archiver-utils@2.1.0 › glob@7.2.3 › inflight@1.0.6
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › archiver@5.3.2 › zip-stream@4.1.1 › archiver-utils@3.0.4 › glob@7.2.3 › inflight@1.0.6
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/dashboard-plugin@7.2.3 › @serverless/platform-client@4.5.1 › archiver@5.3.2 › archiver-utils@2.1.0 › glob@7.2.3 › inflight@1.0.6
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/platform-client@4.5.1 › archiver@5.3.2 › zip-stream@4.1.1 › archiver-utils@3.0.4 › glob@7.2.3 › inflight@1.0.6
-
Introduced through: serverless@serverless/serverless#d09dc6592fab1b8577daa3699373729340a7241d › @serverless/dashboard-plugin@7.2.3 › @serverless/platform-client@4.5.1 › archiver@5.3.2 › zip-stream@4.1.1 › archiver-utils@3.0.4 › 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
.