Is CVE-2015-9545 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2015-9545 being exploited in the wild.

How severe is CVE-2015-9545?

Low severity, with a CVSS score of 3.1, published 9 December 2021.

Which products and versions are affected?

xdlocalstorage (npm) SEMVER:introduced=0,last_affected=2.0.5.

Is there a fix for CVE-2015-9545?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2015-9545 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2015-9545?

Check whether you run xdlocalstorage (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2015-9545: xdLocalStorage improper input validation in origin verification

CVE-2015-9545 · Severity: low · CVSS 3.1 · Published 2021-12-09

xdLocalStorage is a JavaScript library that enables cross-domain access to browser local storage. The library fails to validate the origin of incoming web messages, allowing an attacker to craft a malicious webpage that, when visited by a user, can read or modify sensitive data stored by legitimate websites in the victim's browser. This could lead to account compromise or exposure of user credentials and private information.

Technologies: xdlocalstorage (npm). Vendors: npm.

Quick answers

Is CVE-2015-9545 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2015-9545 being exploited in the wild.
How severe is CVE-2015-9545?: Low severity, with a CVSS score of 3.1, published 9 December 2021.
Which products and versions are affected?: xdlocalstorage (npm) SEMVER:introduced=0,last_affected=2.0.5.
Is there a fix for CVE-2015-9545?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2015-9545 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2015-9545?: Check whether you run xdlocalstorage (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an improper input validation flaw (CWE-20) in the receiveMessage() function of xdLocalStorage.js. The function processes cross-origin messages via the postMessage API without validating the origin of the sender. This allows a malicious attacker controlling a website to send crafted messages that access or tamper with local storage data from other domains. The attack requires user interaction (visiting a malicious site), and can result in both confidentiality and integrity violations of local storage data. The vulnerability affects xdLocalStorage versions through 2.0.5; patches addressing origin validation are available.

Affected products

xdLocalStorage xdLocalStorage through 2.0.5

Identifiers

CVE-2015-9545
GHSA-76qm-4f93-fg6f

Timeline

2015-08-13: disclosed: Issue opened on GitHub describing missing origin whitelisting
2020-04-07: advisory: CVE-2015-9545 published in NVD
2021-12-09: advisory: GHSA-76qm-4f93-fg6f advisory published

References

https://github.com/ofirdagan/cross-domain-local-storage/issues/17

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