CyberSecBulletin
CVE-2024-29192NVD status: Analyzed

go2rtc: Cross-Site Request Forgery

Published Updated By the CyberSecBulletin desk

CVE-2024-29192 is a high-severity cross-site request forgery vulnerability in go2rtc from AlexxIT, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. Affected go2rtc versions: <= 1.8.5; 1.8.5 and earlier. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.47% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Check which version of go2rtc you run against the affected versions below, and install the vendor's latest release.
  2. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
  3. Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.

Affected products and versions

VendorProductAffected versionsFixed in
AlexxITgo2rtc<= 1.8.5; 1.8.5 and earlierNot stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
RequiredA user must take an action such as opening a file or link.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by CNA (github.com).

Official description

gotortc is a camera streaming application. Versions 1.8.5 and prior are vulnerable to Cross-Site Request Forgery. The `/api/config` endpoint allows one to modify the existing configuration with user-supplied values. While the API is only allowing localhost to interact without authentication, an attacker may be able to achieve that depending on how go2rtc is set up on the upstream application, and given that this endpoint is not protected against CSRF, it allows requests from any origin (e.g. a "drive-by" attack) . The `exec` handler allows for any stream to execute arbitrary commands. An attacker may add a custom stream through `api/config`, which may lead to arbitrary command execution. In the event of a victim visiting the server in question, their browser will execute the requests against the go2rtc instance. Commit 8793c3636493c5efdda08f3b5ed5c6e1ea594fd9 adds a warning about secure API access.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Cross-Site Request Forgery

The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

How developers prevent this class of flaw

  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, use anti-CSRF packages such as the OWASP CSRFGuard. Another example is the ESAPI Session Management control, which includes a component for CSRF.
  • Ensure that the application is free of cross-site scripting issues (CWE-79), because most CSRF defenses can be bypassed using attacker-controlled script.
  • Generate a unique nonce for each form, place the nonce into the form, and verify the nonce upon receipt of the form. Be sure that the nonce is not predictable (CWE-330).

More Cross-Site Request Forgery vulnerabilities (CWE-352)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: partial).
  3. Record last changed materially (score, affected products, status or references).

References

Technical write-ups (may include proof of concept)

Recent Cross-Site Request Forgery vulnerabilities

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