Teclib GLPI Remote Code Execution
CVE-2022-35914 is a critical-severity improper neutralization of special elements in output used by a downstream component vulnerability in Glpi from GLPI Project, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Glpi versions: 10.0.2 and earlier. The record does not name a fixed version, so check the vendor advisory. CISA added it to the Known Exploited Vulnerabilities catalogue on March 7, 2023, which means attacks have been observed in the wild.
Attackers are already exploiting this vulnerability, according to CISA.
What to do
- Check which version of Glpi you run against the affected versions below, and install the vendor's latest release.
- CISA's required action: Apply updates per vendor instructions.
- Read the advisory on glpi-project.org for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| GLPI Project | Glpi | 10.0.2 and earlier | Not stated |
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.8 | Critical | NVD |
| CVSS 3.1 | 9.8 | Critical | CISA (ADP) |
Official description
/vendor/htmlawed/htmlawed/htmLawedTest.php in the htmlawed module for GLPI through 10.0.2 allows PHP code injection.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of Special Elements in Output Used by a Downstream Component
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
How developers prevent this class of flaw
- Programming languages and supporting technologies might be chosen which are not subject to these issues.
- Utilize an appropriate mix of allowlist and denylist parsing to filter control-plane syntax from all input.
Timeline
- CVE record published.
- Added to CISA's Known Exploited Vulnerabilities catalogue.
- Deadline for US federal agencies to remediate, set by CISA.
- CISA published its SSVC assessment (exploitation: active, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Advisories
- glpi-project.org/fr/glpi-10-0-3-disponible/Release Notes
Patches and release notes
- bioinformatics.org/phplabware/sourceer/sourceer.php?&Sfs=htmLawedTest.php&Sl=.%2Finternal_utilities%2FhtmLawedThird Party Advisory
- github.com/glpi-project/glpi/releasesRelease Notes, Third Party Advisory
Third-party and government advisories
- github.com/Orange-Cyberdefense/CVE-repository/Third Party Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-35914US Government Resource
Technical write-ups (may include proof of concept)
- packetstormsecurity.com/files/169501/GLPI-10.0.2-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- github.com/Orange-Cyberdefense/CVE-repository/blob/master/PoCs/POC_2022-35914.shExploit
- mayfly277.github.io/posts/GLPI-htmlawed-CVE-2022-35914/Exploit, Third Party Advisory
Other vulnerabilities in Glpi
- 7.1 High severity
- 9.2 Critical severity
- 8.7 High severity
- 7.2 High severity
- 8.5 High severity
- 7.1 High severity
Recent Improper Neutralization of Special Elements in Output Used by a Downstream Component vulnerabilities
- 9.8 Critical severity
- 8.8 High severity
- 7.2 High severity
- 9.8 Critical severity
- 8.8 High severity
- 7.2 High severity
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