The Drupal project uses the PEAR Archive\_Tar library. The PEAR Archive\_Tar library has released a security update that impacts Drupal. For more information please see: * [CVE-2020-28948](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28948) * [CVE-2020-28949](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28949) Multiple vulnerabilities are possible if Drupal is configured to allow `.tar`, `.tar.gz`, `.bz2`, or `.tlz` file uploads and processes them. **To mitigate this issue, prevent untrusted users from uploading `.tar`, `.tar.gz`, `.bz2`, or `.tlz` files.** This is a different issue than [SA-CORE-2019-012](https://www.drupal.org/sa-core-2019-012). Similar configuration changes may mitigate the problem until you are able to patch.
describes (2)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-28949US | high7.8OT critical | KEV | ||
Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succe… | ||||
| CVE-2020-28948US | high7.8 | Exploit | ||
Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked. | ||||
references
External citations — patches, advisories, analysis.
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