CVE-2017-9841
What it is
Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- In the wild
- CISA lists this as exploited in real attacks. Treat as urgent.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- 2022-02-15 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
- 2022-08-15 Remediation deadlineCISA's due date for federal agencies to fix it
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
- Exploit odds: 100.0% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
- It meets the bar for Drop everything: critical, and exploited or very likely to be.
Details
- Published
- Last modified
- Added to CISA KEV
- 2022-02-15
- Exploit probability
- 100.0% · EPSS, next 30 days
- Weakness
- CWE-94 · Code injection
- Record status
- Analyzed
Affected
- Phpunit Project Phpunit ≤ 4.8.27
- Phpunit Project Phpunit < 5.6.3
- Oracle Communications Diameter Signaling Router ≤ 8.5.0
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2017-9841.md and follow it. Check whether this project is affected by CVE-2017-9841. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/sebastianbergmann/phpunit/commit/284a69fb88a2d0845d23f42974a583d8f59bf5a5
- https://github.com/sebastianbergmann/phpunit/pull/1956
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://github.com/sebastianbergmann/phpunit/commit/284a69fb88a2d0845d23f42974a583d8f59bf5a5
- https://github.com/sebastianbergmann/phpunit/pull/1956
- https://www.oracle.com/security-alerts/cpuoct2021.html
References
- http://web.archive.org/web/20170701212357/http://phpunit.vulnbusters.com/
- http://www.securityfocus.com/bid/101798
- http://www.securitytracker.com/id/1039812
- https://github.com/sebastianbergmann/phpunit/commit/284a69fb88a2d0845d23f42974a583d8f59bf5a5
- https://github.com/sebastianbergmann/phpunit/pull/1956
- https://security.gentoo.org/glsa/201711-15
- 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
- https://github.com/sebastianbergmann/phpunit/commit/284a69fb88a2d0845d23f42974a583d8f59bf5a5
- https://github.com/sebastianbergmann/phpunit/pull/1956
- https://security.gentoo.org/glsa/201711-15
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9841