# CVE-2022-42889: commons-text: Apache Commons Text performs variable interpolation, allowing properties to be dynamically evaluated and expanded

CVE-2022-42889 is fixed in commons-text on 1 platform, first by DEBIAN-CVE-2022-42889, released October 13, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2022-42889
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.9993
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 13, 2022

## Description

Apache Commons Text performs variable interpolation, allowing properties to be dynamically evaluated and expanded. The standard format for interpolation is "${prefix:name}", where "prefix" is used to locate an instance of org.apache.commons.text.lookup.StringLookup that performs the interpolation. Starting with version 1.5 and continuing through 1.9, the set of default Lookup instances included interpolators that could result in arbitrary code execution or contact with remote servers. These lookups are: - "script" - execute expressions using the JVM script execution engine (javax.script) - "dns" - resolve dns records - "url" - load values from urls, including from remote servers Applications using the interpolation defaults in the affected versions may be vulnerable to remote code execution or unintentional contact with remote servers if untrusted configuration values are used. Users are recommended to upgrade to Apache Commons Text 1.10.0, which disables the problematic interpolators by default.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | commons-text Debian 12.15 (bookworm) | 1.10.0-1 | [DEBIAN-CVE-2022-42889](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42889.md) | Oct 13, 2022 |
| Linux | commons-text Debian 13.5 (trixie) | 1.10.0-1 | [DEBIAN-CVE-2022-42889](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42889.md) | Oct 13, 2022 |
| Linux | commons-text Debian 14 | 1.10.0-1 | [DEBIAN-CVE-2022-42889](https://patchblox.com/security/data/fix/linux/debian-cve-2022-42889.md) | Oct 13, 2022 |

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