CVE intelligence and bounded remediation

CVE-2024-23673 — Apache Sling Servlets Resolver security vulnerability

High CVSS 8.5

Malicious code execution via path traversal in Apache Software Foundation Apache Sling Servlets Resolver.This issue affects all version of Apache Sling Servlets Resolver before 2.11.0. However, whether a system is vulnerable to this attack depends on the exact configuration of the system. If the system is vulnerable, a user with write access to the repository might be able to trick the Sling Servlet Resolver to load a previously uploaded script. Users are recommended to upgrade to version 2.11.0, which fixes this issue. It is recommended to upgrade, regardless of whether your system configuration currently allows this attack or not.

Severity
High
CVSS
8.5 (3.1)
Published
2024-02-06
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-22

Affected products

  • apache / sling_servlets_resolver

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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