OESA-2024-1742 (CVE-2023-49797)
Vulnerability from osv_openeuler – Published: 2024-06-21 11:07 – Updated: 2026-08-06 11:07 – Source websitePyInstaller bundles a Python application and all its dependencies into a single package. The user can run the packaged app without installing a Python interpreter or any modules.
Security Fix(es):
PyInstaller bundles a Python application and all its dependencies into a single package. A PyInstaller built application, elevated as a privileged process, may be tricked by an unprivileged attacker into deleting files the unprivileged user does not otherwise have access to. A user is affected if all the following are satisfied: 1. The user runs an application containing either matplotlib or win32com. 2. The application is ran as administrator (or at least a user with higher privileges than the attacker). 3. The user's temporary directory is not locked to that specific user (most likely due to TMP/TEMP environment variables pointing to an unprotected, arbitrary, non default location). Either: A. The attacker is able to very carefully time the replacement of a temporary file with a symlink. This switch must occur exactly between shutil.rmtree()'s builtin symlink check and the deletion itself B: The application was built with Python 3.7.x or earlier which has no protection against Directory Junctions links. The vulnerability has been addressed in PR #7827 which corresponds to pyinstaller >= 5.13.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.(CVE-2023-49797)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"python-pyinstaller-debuginfo-5.13.0-2.oe2403.aarch64.rpm",
"python-pyinstaller-debugsource-5.13.0-2.oe2403.aarch64.rpm",
"python-pyinstaller-help-5.13.0-2.oe2403.aarch64.rpm",
"python3-pyinstaller-5.13.0-2.oe2403.aarch64.rpm"
],
"src": [
"python-pyinstaller-5.13.0-2.oe2403.src.rpm"
],
"x86_64": [
"python-pyinstaller-debuginfo-5.13.0-2.oe2403.x86_64.rpm",
"python-pyinstaller-help-5.13.0-2.oe2403.x86_64.rpm",
"python-pyinstaller-debugsource-5.13.0-2.oe2403.x86_64.rpm",
"python3-pyinstaller-5.13.0-2.oe2403.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS",
"name": "python-pyinstaller",
"purl": "pkg:rpm/openEuler/python-pyinstaller\u0026distro=openEuler-24.03-LTS"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.13.0-2.oe2403"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "High"
},
"details": "PyInstaller bundles a Python application and all its dependencies into a single package. The user can run the packaged app without installing a Python interpreter or any modules.\r\n\r\nSecurity Fix(es):\r\n\r\nPyInstaller bundles a Python application and all its dependencies into a single package. A PyInstaller built application, elevated as a privileged process, may be tricked by an unprivileged attacker into deleting files the unprivileged user does not otherwise have access to. A user is affected if **all** the following are satisfied: 1. The user runs an application containing either `matplotlib` or `win32com`. 2. The application is ran as administrator (or at least a user with higher privileges than the attacker). 3. The user\u0026apos;s temporary directory is not locked to that specific user (most likely due to `TMP`/`TEMP` environment variables pointing to an unprotected, arbitrary, non default location). Either: A. The attacker is able to very carefully time the replacement of a temporary file with a symlink. This switch must occur exactly between `shutil.rmtree()`\u0026apos;s builtin symlink check and the deletion itself B: The application was built with Python 3.7.x or earlier which has no protection against Directory Junctions links. The vulnerability has been addressed in PR #7827 which corresponds to `pyinstaller \u0026gt;= 5.13.1`. Users are advised to upgrade. There are no known workarounds for this vulnerability.(CVE-2023-49797)",
"id": "OESA-2024-1742",
"modified": "2026-08-06T11:07:12Z",
"published": "2024-06-21T11:07:12Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2024-1742"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49797"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "python-pyinstaller security update",
"upstream": [
"CVE-2023-49797"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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