CVE-2024-39315

5.7 · MEDIUM

Published Jul 2, 2024 pomerium CWE-201 EPSS 0.42% (35th pctl) CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Overview

CVE-2024-39315 is a medium-severity vulnerability affecting pomerium pomerium. It was published on July 2, 2024 and has a CVSS 3.1 base score of 5.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.7, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical Description

Pomerium is an identity and context-aware access proxy. Prior to version 0.26.1, the Pomerium user info page (at `/.pomerium`) unintentionally included serialized OAuth2 access and ID tokens from the logged-in user's session. These tokens are not intended to be exposed to end users. This issue may be more severe in the presence of a cross-site scripting vulnerability in an upstream application proxied through Pomerium. If an attacker could insert a malicious script onto a web page proxied through Pomerium, that script could access these tokens by making a request to the `/.pomerium` endpoint. Upstream applications that authenticate only the ID token may be vulnerable to user impersonation using a token obtained in this manner. Note that an OAuth2 access token or ID token by itself is not sufficient to hijack a user's Pomerium session. Upstream applications should not be vulnerable to user impersonation via these tokens provided the application verifies the Pomerium JWT for each request

Remediation

Check the references section for vendor advisories and patches from pomerium. Update pomerium to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor	Product	Versions	Status
pomerium	pomerium	>= 0, < 0.26.1	Affected

References

GitHub github.com/pomerium/pomerium/commit/4c7c4320afb2ced70ba19b46de1ac4383f3daa48 GitHub github.com/pomerium/pomerium/security/advisories/GHSA-rrqr-7w59-637v GitHub github.com/pomerium/pomerium/commit/4c7c4320afb2ced70ba19b46de1ac4383f3daa48 GitHub github.com/pomerium/pomerium/security/advisories/GHSA-rrqr-7w59-637v

Frequently Asked Questions

What is CVE-2024-39315?

CVE-2024-39315 is a medium-severity vulnerability affecting pomerium pomerium. It was published on July 2, 2024 and has a CVSS 3.1 base score of 5.7 (MEDIUM).

How severe is CVE-2024-39315?

This vulnerability has a CVSS 3.1 base score of 5.7, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-39315?

How can CyberStrike help with CVE-2024-39315?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-39315 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

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HackBrowser

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