CVE-2019-17109

koji hub allows arbitrary upload destinations

The way that the hub code validates upload paths allows for an attacker to choose an arbitrary destination for the uploaded file.
Uploading still requires login. However, an attacker with credentials could damage the integrity of the Koji system.

Workaround

There is no known workaround. All Koji admins are encouraged to update to a fixed version as soon as possible.

Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.

CVE-2019-17109 has a CVSS score of 6.5 (High). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.14.3, 1.15.3, 1.16.3, 1.17.1, 1.18.1); upgrading removes the vulnerable code path.

Kodem intelligence

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Koji versions 1.14.3, 1.15.3, 1.16.3, 1.17.1, and 1.18.1 all include patches to solve this vulnerability.

1. What is CVE-2019-17109? CVE-2019-17109 is a high-severity path traversal vulnerability in koji (pip), affecting versions >= 1.14.0, < 1.14.3. It is fixed in 1.14.3, 1.15.3, 1.16.3, 1.17.1, 1.18.1. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
2. How severe is CVE-2019-17109? CVE-2019-17109 has a CVSS score of 6.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of koji are affected by CVE-2019-17109? koji (pip) versions >= 1.14.0, < 1.14.3 is affected.
4. Is there a fix for CVE-2019-17109? Yes. CVE-2019-17109 is fixed in 1.14.3, 1.15.3, 1.16.3, 1.17.1, 1.18.1. Upgrade to this version or later.
5. Is CVE-2019-17109 exploitable, and should I be worried? Whether CVE-2019-17109 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2019-17109 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2019-17109?
   • Upgrade koji to 1.14.3 or later
   • Upgrade koji to 1.15.3 or later
   • Upgrade koji to 1.16.3 or later
   • Upgrade koji to 1.17.1 or later
   • Upgrade koji to 1.18.1 or later

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