CyberSecBulletin
CVE-2018-5430Exploited in the wildNVD status: Analyzed

TIBCO JasperReports Server Information Disclosure

Published Updated By the CyberSecBulletin desk

CVE-2018-5430 is a high-severity improper limitation of a pathname to a restricted directory vulnerability in TIBCO JasperReports Server from TIBCO Software, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected TIBCO JasperReports Server versions: 6.2.4 and earlier; 6.3.0; 6.3.2, and others listed below. The record does not name a fixed version, so check the vendor advisory. CISA added it to the Known Exploited Vulnerabilities catalogue on December 29, 2022, which means attacks have been observed in the wild.

Patch now

Attackers are already exploiting this vulnerability, according to CISA.

What to do

  1. Check which version of TIBCO JasperReports Server you run against the affected versions below, and install the vendor's latest release.
  2. CISA's required action: Apply updates per vendor instructions.

Affected products and versions

VendorProductAffected versionsFixed in
TIBCO SoftwareTIBCO JasperReports Server6.2.4 and earlier; 6.3.0; 6.3.2; 6.3.3; 6.4.0; 6.4.2Not stated
TIBCO SoftwareTIBCO JasperReports Server Community Edition6.4.2 and earlierNot stated
TIBCO SoftwareTIBCO JasperReports Server for ActiveMatrix BPM6.4.2 and earlierNot stated
TIBCO SoftwareTIBCO Jaspersoft for AWS with Multi-Tenancy6.4.2 and earlierNot stated
TIBCO SoftwareTIBCO Jaspersoft Reporting and Analytics for AWS6.4.2 and earlierNot stated
TIBCOJasperreports Server6.2.4 and earlier; 6.4.2 and earlier; 6.3.0; 6.3.2; 6.3.3; 6.4.0; 6.4.2Not stated
TIBCOJaspersoft6.4.2 and earlierNot stated
TIBCOJaspersoft Reporting And Analytics6.4.2 and earlierNot stated

Version data comes from the organisation that assigned the CVE. 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
LowA basic user account is enough.
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:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.8HighNVD
CVSS 3.07.7HighCNA (tibco.com)
CVSS 2.04.0MediumNVD

Official description

The Spring web flows of TIBCO Software Inc.'s TIBCO JasperReports Server, TIBCO JasperReports Server Community Edition, TIBCO JasperReports Server for ActiveMatrix BPM, TIBCO Jaspersoft for AWS with Multi-Tenancy, and TIBCO Jaspersoft Reporting and Analytics for AWS contain a vulnerability which may allow any authenticated user read-only access to the contents of the web application, including key configuration files. Affected releases include TIBCO Software Inc.'s TIBCO JasperReports Server: versions up to and including 6.2.4; 6.3.0; 6.3.2; 6.3.3;6.4.0; 6.4.2, TIBCO JasperReports Server Community Edition: versions up to and including 6.4.2, TIBCO JasperReports Server for ActiveMatrix BPM: versions up to and including 6.4.2, TIBCO Jaspersoft for AWS with Multi-Tenancy: versions up to and including 6.4.2, TIBCO Jaspersoft Reporting and Analytics for AWS: versions up to and including 6.4.2.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Limitation of a Pathname to a Restricted Directory

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

How developers prevent this class of flaw

  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth.

More Improper Limitation of a Pathname to a Restricted Directory vulnerabilities (CWE-22)

Timeline

  1. CVE record published.
  2. Added to CISA's Known Exploited Vulnerabilities catalogue.
  3. Deadline for US federal agencies to remediate, set by CISA.
  4. CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: partial).
  5. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Technical write-ups (may include proof of concept)

Other vulnerabilities in TIBCO JasperReports Server

All TIBCO JasperReports Server vulnerabilities

Recent Improper Limitation of a Pathname to a Restricted Directory vulnerabilities

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