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CVE-2024-6232 is a regular-expression denial-of-service vulnerability in CPython's tarfile.TarFile header parsing. Regular expressions used to parse tar header values permit excessive backtracking when processing specifically crafted tar archives, allowing resource exhaustion during archive parsing.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
Repository contains a single Python script (CVE_2025_4517.py) plus a README. The script generates a malicious tar archive intended to exploit a Python tarfile path sanitization/realpath edge case (PATH_MAX-length overflow/"blinding" of security filters) described in the referenced Google Security Research advisory (GHSA-hgqp-3mmf-7h8f). Exploit capabilities: - Produces a crafted tar file that builds a deeply nested directory structure and a chain of symlinks to push path resolution to the edge of PATH_MAX (platform-dependent: shorter on macOS, longer on others). - Introduces a deep-path symlink trigger designed to break or confuse os.path.realpath()-based checks. - Creates a symlink ("escape") that resolves to a path escaping the extraction directory and targeting /etc/sudoers.d/<username>. - Uses a hardlink ("exploit_link") pointing to the escape symlink to bypass tarfile filtering logic, then writes a regular file entry with sudoers content to effect an arbitrary file write. Overall purpose/structure: - CVE_2025_4517.py: command-line tool taking (username, output tar filename) and writing a weaponized tarball. - README.md: explains this is a weaponized variant of the advisory PoC, adapted from writing a benign file to an LPE/persistence scenario by writing a sudoers drop-in. No network activity is present; the exploit is purely local and relies on a privileged extraction of the generated tar archive on a vulnerable Python tarfile implementation.
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45 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A regular expression denial-of-service (ReDoS) vulnerability in CPython's tarfile component, caused by excessive backtracking while parsing archive header values. It affects Python packages installed on Rocky Linux 9 systems covered by CIQ advisory crlsa-2024_8374.
A CPython tarfile module regular-expression denial-of-service (ReDoS) vulnerability caused by excessive backtracking while parsing tar archive header values. The notice identifies Rocky Linux 8 Python packages as affected.
A CPython regular-expression denial-of-service (ReDoS) vulnerability in tarfile.TarFile header parsing. A specially crafted TAR archive can trigger excessive regex backtracking and cause a denial of service.
A CPython regular-expression denial-of-service (ReDoS) vulnerability in tarfile.TarFile header parsing, where a specially crafted tar archive can trigger excessive regex backtracking and cause availability impact.
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