CVE intelligence and bounded remediation

CVE-2020-11979 — Apache Ant security vulnerability

High CVSS 7.5

As mitigation for CVE-2020-1945 Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection, effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.

Severity
High
CVSS
7.5 (3.1)
Published
2020-10-01
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-379

Affected products

  • apache / ant / 1.10.8
  • gradle / gradle
  • fedoraproject / fedora / 31
  • fedoraproject / fedora / 32
  • fedoraproject / fedora / 33
  • oracle / agile_engineering_data_management / 6.2.1.0

Showing 6 representative product identities from 71 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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