CVE-2017-9841
Description
PHPUnit allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.
CISA KEV
- Vendor
- PHPUnit
- Product
- PHPUnit
- Due date
- 2022-08-15
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
PHP Unit 4.8.28 - Remote Code Execution (RCE) (Unauthenticated)
OS impact
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 1.28.3-1 |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 5.4.6-2 |
| sid | Fixed | 5.4.6-2 |
| forky | Fixed | 5.4.6-2 |
| bullseye | Fixed | 5.4.6-2 |
| bookworm | Fixed | 5.4.6-2 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | phpunit/phpunit | >=4.8.19,<4.8.28 | 4.8.28 |
| Packagist | phpunit/phpunit | >=5.0.10,<5.6.3 | 5.6.3 |
References
- https://security-tracker.debian.org/tracker/CVE-2017-9841
- https://nvd.nist.gov/vuln/detail/CVE-2017-9841
- https://github.com/sebastianbergmann/phpunit/pull/1955
- https://github.com/sebastianbergmann/phpunit/pull/1956
- https://github.com/sebastianbergmann/phpunit/commit/284a69fb88a2d0845d23f42974a583d8f59bf5a5
- https://github.com/sebastianbergmann/phpunit/commit/3aaddb1c5bd9b9b8d070b4cf120e71c36fd08412
- https://github.com/FriendsOfPHP/security-advisories/blob/master/phpunit/phpunit/CVE-2017-9841.yaml
- https://github.com/sebastianbergmann/phpunit
- https://security.gentoo.org/glsa/201711-15
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9841
- https://www.oracle.com/security-alerts/cpuoct2021.html
- http://web.archive.org/web/20170701212357/http://phpunit.vulnbusters.com
- http://www.securityfocus.com/bid/101798
- http://www.securitytracker.com/id/1039812
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.