CVE-2025-24889

CVE-2025-24889 is a medium-severity vulnerability with a CVSS 3.x base score of 4.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Description

The SecureDrop Client is a desktop application for journalists to communicate with sources and work with submissions on the SecureDrop Workstation. Prior to versions 0.14.1 and 1.0.1, an attacker who has already gained code execution in a virtual machine on the SecureDrop Workstation could gain code execution in the `sd-log` virtual machine by sending a specially crafted log entry. The vulnerability is not exploitable remotely and requires an attacker to already have code execution on one of the other virtual machines (VMs) of the system. Due to the Workstation's underlying usage of Qubes for strong isolation, the vulnerability would have allowed lateral movement between any log-enabled VM and the `sd-log` VM, but no further. The SecureDrop workstation collects logs centrally in an isolated virtual machine named `sd-log` for easy export for support and debugging purposes. The `sd-log` VM is completely isolated from the internet and ingests logs via a narrow Qubes RPC policy that allows for specific inter-VM communication via the Xen vchan protocol used by Qubes's qrexec mechanism. A path traversal bug was found in the logic used to choose where to write the log file for a specific VM: the VM name, used unsanitized in the destination path in `sd-log`, is supplied by the logging VM itself instead of being read from a trusted source, such as the Qubes environment variable `QREXEC_REMOTE_DOMAIN` that is used in the fixed implementation. An attacker could provide an arbitrary source VM name, possibly overwriting logs of other VMs, or writing a file named `syslog.log`, with attacker-controlled content, in arbitrary directories as a low-privileged user. A successful attack could potentially overwrite or add configuration to software that loads configuration files from a directory. This is exploitable to achieve code execution by setting the target directory to `/home/user/.config/autostart/` and letting it write `syslog.log`, because XFCE treats any file in that directory as a `.desktop` file regardless of its extension. Versions 0.14.1 and 1.0.1 contain a patch for this issue.

Frequently asked questions

What is CVE-2025-24889?
The SecureDrop Client is a desktop application for journalists to communicate with sources and work with submissions on the SecureDrop Workstation. Prior to versions 0.14.1 and 1.0.1, an attacker who has already gained code execution in a virtual machine on the SecureDrop Workstation could gain code execution in the `sd-log` virtual machine by sending a specially crafted log entry. The vulnerability is not exploitable remotely and requires an attacker to already have code execution on one of the other virtual machines (VMs) of the system. Due to the Workstation's underlying usage of Qubes for strong isolation, the vulnerability would have allowed lateral movement between any log-enabled VM and the `sd-log` VM, but no further. The SecureDrop workstation collects logs centrally in an isolated virtual machine named `sd-log` for easy export for support and debugging purposes. The `sd-log` VM is completely isolated from the internet and ingests logs via a narrow Qubes RPC policy that allows for specific inter-VM communication via the Xen vchan protocol used by Qubes's qrexec mechanism. A path traversal bug was found in the logic used to choose where to write the log file for a specific VM: the VM name, used unsanitized in the destination path in `sd-log`, is supplied by the logging VM itself instead of being read from a trusted source, such as the Qubes environment variable `QREXEC_REMOTE_DOMAIN` that is used in the fixed implementation. An attacker could provide an arbitrary source VM name, possibly overwriting logs of other VMs, or writing a file named `syslog.log`, with attacker-controlled content, in arbitrary directories as a low-privileged user. A successful attack could potentially overwrite or add configuration to software that loads configuration files from a directory. This is exploitable to achieve code execution by setting the target directory to `/home/user/.config/autostart/` and letting it write `syslog.log`, because XFCE treats any file in that directory as a `.desktop` file regardless of its extension. Versions 0.14.1 and 1.0.1 contain a patch for this issue.
How severe is CVE-2025-24889?
CVE-2025-24889 has a CVSS 3.x base score of 4.5, rated medium severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2025-24889 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-24889?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-24889 have an EU (EUVD) identifier?
Yes. CVE-2025-24889 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-3975.
When was CVE-2025-24889 published?
CVE-2025-24889 was published on 2025-02-13 and last updated on 2026-06-17.

References

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