Description
PECL in the download utility class in the Installer in PEAR Base System v1.10.1 does not validate file types and filenames after a redirect, which allows remote HTTP servers to overwrite files via crafted responses, as demonstrated by a .htaccess overwrite.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | php-pear | No fix yet | — |
| Debian 13 | php-pear | No fix yet | — |
| Debian 12 | php-pear | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | php-pear | No fix yet | — |
| Ubuntu 26.04 LTS | php-pear | No fix yet | — |
| Ubuntu 25.10 | php-pear | No fix yet | — |
| Ubuntu 24.04 LTS | php-pear | No fix yet | — |
| Ubuntu 22.04 LTS | php-pear | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | php-pear | No fix yet | — |
| Ubuntu 18.04 LTS | php-pear | No fix yet | — |
| Ubuntu Pro 16.04 LTS | php-pear | No fix yet | — |
| Ubuntu Pro 14.04 LTS | php5 | No fix yet | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- PHP PEAR 1.10.1 - Arbitrary File Download EDB-41185 · webapps · Jan 30, 2017
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | pear/pear | <= 1.10.1 | — | GHSA-xxv8-pv43-57x5 |
References
- 41185 exploit
- 95882 vdb-entry
- http://pear.php.net/bugs/bug.php?id=21171