Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') Affecting flatpak/flatpak package, versions [,1.14.10)[1.15.0,1.15.10)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published16 Aug 2024
- disclosed15 Aug 2024
- creditchrisawi
Introduced: 15 Aug 2024
CVE-2024-42472 (opens in a new tab)How to fix?
Upgrade flatpak/flatpak to version 1.14.10, 1.15.10 or higher.
Overview
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') via the persistent option in application permissions. An attacker can manipulate the symlink to redirect the bind mount, allowing unauthorized access and modification of files outside the intended sandbox environment by replacing the source directory for the persistent option with a malicious symlink.
Notes:
Partial protection against this vulnerability can be provided by patching Flatpak, however this leaves a race condition that could be exploited by two instances of a malicious app running in parallel. Closing the race condition requires updating or patching the version of bubblewrap that is used by Flatpak to add the new
--bind-fdoption.This only affects applications using the persistent (--persist) permission.