CVE-2019-11831
CRITICALCVSS 9.8/10EPSS 5.59%
Last modified
CVE-2019-11831 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 does not prevent directory traversal, which allows attackers to bypass a deserialization protection mechanism, as demonstrated by a phar:///path/bad.phar/../good.phar URL.. EPSS estimates a 5.59% chance of exploitation in the next 30 days.
Description
The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 does not prevent directory traversal, which allows attackers to bypass a deserialization protection mechanism, as demonstrated by a phar:///path/bad.phar/../good.phar URL.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Typo3 | Pharstreamwrapper | >= 2.0.0, < 2.1.1 |
| Typo3 | Pharstreamwrapper | >= 3.0.0, < 3.1.1 |
| Debian | Debian Linux | 8.0 |
| Debian | Debian Linux | 9.0 |
| Fedoraproject | Fedora | 28 |
| Fedoraproject | Fedora | 29 |
| Fedoraproject | Fedora | 30 |
| Drupal | Drupal | >= 7.0, < 7.67 |
| Drupal | Drupal | >= 8.6.0, < 8.6.16 |
| Drupal | Drupal | >= 8.7.0, < 8.7.1 |
| Joomla | Joomla\! | >= 3.9.3, <= 3.9.5 |
References
- http://www.securityfocus.com/bid/108302Third Party Advisory, VDB Entry
- https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v2.1.1Release Notes, Third Party Advisory
- https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v3.1.1Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00029.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/May/36Issue Tracking, Mailing List, Third Party Advisory
- https://typo3.org/security/advisory/typo3-psa-2019-007/Vendor Advisory
- https://www.debian.org/security/2019/dsa-4445Third Party Advisory
- https://www.drupal.org/sa-core-2019-007Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_22Third Party Advisory
- http://www.securityfocus.com/bid/108302Third Party Advisory, VDB Entry
- https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v2.1.1Release Notes, Third Party Advisory
- https://github.com/TYPO3/phar-stream-wrapper/releases/tag/v3.1.1Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/05/msg00029.htmlMailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/May/36Issue Tracking, Mailing List, Third Party Advisory
- https://typo3.org/security/advisory/typo3-psa-2019-007/Vendor Advisory
- https://www.debian.org/security/2019/dsa-4445Third Party Advisory
- https://www.drupal.org/sa-core-2019-007Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_22Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2019-11831?
The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 does not prevent directory traversal, which allows attackers to bypass a deserialization protection mechanism, as demonstrated by a phar:///path/bad.phar/../good.phar URL.
How severe is CVE-2019-11831?
CVE-2019-11831 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.59% probability of exploitation in the next 30 days.
How do I fix CVE-2019-11831?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2019
- CVE-2019-11826Relative path traversal vulnerability in SYNO.PhotoTeam.Uplo…8.8
- CVE-2019-11827Cross-site scripting (XSS) vulnerability in SYNO.NoteStation…5.4
- CVE-2019-11828Cross-site scripting (XSS) vulnerability in Chart in Synolog…5.4
- CVE-2019-11829OS command injection vulnerability in drivers_syno_import_us…9.8
- CVE-2019-1183This information is being revised to indicate that this CVE …
- CVE-2019-11830PharMetaDataInterceptor in the PharStreamWrapper (aka phar-s…
- CVE-2019-11832TYPO3 8.x before 8.7.25 and 9.x before 9.5.6 allows remote c…
- CVE-2019-11833fs/ext4/extents.c in the Linux kernel through 5.1.2 does not…5.5
- CVE-2019-11834cJSON before 1.7.11 allows out-of-bounds access, related to …9.8
- CVE-2019-11835cJSON before 1.7.11 allows out-of-bounds access, related to …9.8
- CVE-2019-11836The Rediffmail (aka com.rediff.mail.and) application 2.2.6 f…
- CVE-2019-11837njs through 0.3.1, used in NGINX, has a segmentation fault i…
Are you affected by CVE-2019-11831?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST