Vulnerabilites related to Python Software Foundation - CPython
cve-2023-6597
Vulnerability from cvelistv5
Published
2024-03-19 15:44
Modified
2024-11-05 19:16
Severity ?
EPSS score ?
Summary
An issue was found in the CPython `tempfile.TemporaryDirectory` class affecting versions 3.12.1, 3.11.7, 3.10.13, 3.9.18, and 3.8.18 and prior.
The tempfile.TemporaryDirectory class would dereference symlinks during cleanup of permissions-related errors. This means users which can run privileged programs are potentially able to modify permissions of files referenced by symlinks in some circumstances.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-0450
Vulnerability from cvelistv5
Published
2024-03-19 15:12
Modified
2024-08-02 15:00
Severity ?
EPSS score ?
Summary
An issue was found in the CPython `zipfile` module affecting versions 3.12.1, 3.11.7, 3.10.13, 3.9.18, and 3.8.18 and prior.
The zipfile module is vulnerable to “quoted-overlap” zip-bombs which exploit the zip format to create a zip-bomb with a high compression ratio. The fixed versions of CPython makes the zipfile module reject zip archives which overlap entries in the archive.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2025-0938
Vulnerability from cvelistv5
Published
2025-01-31 17:51
Modified
2025-02-04 20:39
Severity ?
EPSS score ?
Summary
The Python standard library functions `urllib.parse.urlsplit` and `urlparse` accepted domain names that included square brackets which isn't valid according to RFC 3986. Square brackets are only meant to be used as delimiters for specifying IPv6 and IPvFuture hosts in URLs. This could result in differential parsing across the Python URL parser and other specification-compliant URL parsers.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.13.0 |
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cve-2024-0397
Vulnerability from cvelistv5
Published
2024-06-17 15:09
Modified
2024-09-17 18:24
Severity ?
EPSS score ?
Summary
A defect was discovered in the Python “ssl” module where there is a memory
race condition with the ssl.SSLContext methods “cert_store_stats()” and
“get_ca_certs()”. The race condition can be triggered if the methods are
called at the same time as certificates are loaded into the SSLContext,
such as during the TLS handshake with a certificate directory configured.
This issue is fixed in CPython 3.10.14, 3.11.9, 3.12.3, and 3.13.0a5.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-12254
Vulnerability from cvelistv5
Published
2024-12-06 15:19
Modified
2025-02-05 16:54
Severity ?
EPSS score ?
Summary
Starting in Python 3.12.0, the asyncio._SelectorSocketTransport.writelines()
method would not "pause" writing and signal to the Protocol to drain
the buffer to the wire once the write buffer reached the "high-water
mark". Because of this, Protocols would not periodically drain the write
buffer potentially leading to memory exhaustion.
This
vulnerability likely impacts a small number of users, you must be using
Python 3.12.0 or later, on macOS or Linux, using the asyncio module
with protocols, and using .writelines() method which had new
zero-copy-on-write behavior in Python 3.12.0 and later. If not all of
these factors are true then your usage of Python is unaffected.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 3.12.0 Version: 3.13.0 Version: 3.14.0a1 |
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cve-2024-8088
Vulnerability from cvelistv5
Published
2024-08-22 18:45
Modified
2024-10-11 22:03
Severity ?
EPSS score ?
Summary
There is a HIGH severity vulnerability affecting the CPython "zipfile"
module affecting "zipfile.Path". Note that the more common API "zipfile.ZipFile" class is unaffected.
When iterating over names of entries in a zip archive (for example, methods
of "zipfile.Path" like "namelist()", "iterdir()", etc)
the process can be put into an infinite loop with a maliciously crafted
zip archive. This defect applies when reading only metadata or extracting
the contents of the zip archive. Programs that are not handling
user-controlled zip archives are not affected.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-4032
Vulnerability from cvelistv5
Published
2024-06-17 15:05
Modified
2024-09-17 15:55
Severity ?
EPSS score ?
Summary
The “ipaddress” module contained incorrect information about whether certain IPv4 and IPv6 addresses were designated as “globally reachable” or “private”. This affected the is_private and is_global properties of the ipaddress.IPv4Address, ipaddress.IPv4Network, ipaddress.IPv6Address, and ipaddress.IPv6Network classes, where values wouldn’t be returned in accordance with the latest information from the IANA Special-Purpose Address Registries.
CPython 3.12.4 and 3.13.0a6 contain updated information from these registries and thus have the intended behavior.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-11168
Vulnerability from cvelistv5
Published
2024-11-12 21:22
Modified
2025-01-06 17:59
Severity ?
EPSS score ?
Summary
The urllib.parse.urlsplit() and urlparse() functions improperly validated bracketed hosts (`[]`), allowing hosts that weren't IPv6 or IPvFuture. This behavior was not conformant to RFC 3986 and potentially enabled SSRF if a URL is processed by more than one URL parser.
References
Impacted products
| Vendor | Product | Version | ||
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Version: 0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0a1 |
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cve-2024-4030
Vulnerability from cvelistv5
Published
2024-05-07 21:02
Modified
2024-09-07 02:44
Severity ?
EPSS score ?
Summary
On Windows a directory returned by tempfile.mkdtemp() would not always have permissions set to restrict reading and writing to the temporary directory by other users, instead usually inheriting the correct permissions from the default location. Alternate configurations or users without a profile directory may not have the intended permissions.
If you’re not using Windows or haven’t changed the temporary directory location then you aren’t affected by this vulnerability. On other platforms the returned directory is consistently readable and writable only by the current user.
This issue was caused by Python not supporting Unix permissions on Windows. The fix adds support for Unix “700” for the mkdir function on Windows which is used by mkdtemp() to ensure the newly created directory has the proper permissions.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-6232
Vulnerability from cvelistv5
Published
2024-09-03 12:29
Modified
2025-01-31 19:54
Severity ?
EPSS score ?
Summary
There is a MEDIUM severity vulnerability affecting CPython.
Regular expressions that allowed excessive backtracking during tarfile.TarFile header parsing are vulnerable to ReDoS via specifically-crafted tar archives.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-3219
Vulnerability from cvelistv5
Published
2024-07-29 21:54
Modified
2025-01-31 19:54
Severity ?
EPSS score ?
Summary
The
“socket” module provides a pure-Python fallback to the
socket.socketpair() function for platforms that don’t support AF_UNIX,
such as Windows. This pure-Python implementation uses AF_INET or
AF_INET6 to create a local connected pair of sockets. The connection
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back to the user, which leaves the server socket vulnerable to a
connection race from a malicious local peer.
Platforms that support AF_UNIX such as Linux and macOS are not affected by this vulnerability. Versions prior to CPython 3.5 are not affected due to the vulnerable API not being included.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-9287
Vulnerability from cvelistv5
Published
2024-10-22 16:34
Modified
2025-01-31 19:55
Severity ?
EPSS score ?
Summary
A vulnerability has been found in the CPython `venv` module and CLI where path names provided when creating a virtual environment were not quoted properly, allowing the creator to inject commands into virtual environment "activation" scripts (ie "source venv/bin/activate"). This means that attacker-controlled virtual environments are able to run commands when the virtual environment is activated. Virtual environments which are not created by an attacker or which aren't activated before being used (ie "./venv/bin/python") are not affected.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0 Version: 3.14.0a1 |
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cve-2024-6923
Vulnerability from cvelistv5
Published
2024-08-01 13:40
Modified
2025-01-31 19:55
Severity ?
EPSS score ?
Summary
There is a MEDIUM severity vulnerability affecting CPython.
The
email module didn’t properly quote newlines for email headers when
serializing an email message allowing for header injection when an email
is serialized.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 Version: 3.9.0 Version: 3.10.0 Version: 3.11.0 Version: 3.12.0 Version: 3.13.0a1 |
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cve-2024-5642
Vulnerability from cvelistv5
Published
2024-06-27 21:05
Modified
2025-02-13 17:54
Severity ?
EPSS score ?
Summary
CPython 3.9 and earlier doesn't disallow configuring an empty list ("[]") for SSLContext.set_npn_protocols() which is an invalid value for the underlying OpenSSL API. This results in a buffer over-read when NPN is used (see CVE-2024-5535 for OpenSSL). This vulnerability is of low severity due to NPN being not widely used and specifying an empty list likely being uncommon in-practice (typically a protocol name would be configured).
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 |
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cve-2024-3220
Vulnerability from cvelistv5
Published
2025-02-14 16:18
Modified
2025-02-14 19:02
Severity ?
EPSS score ?
Summary
There is a defect in the CPython standard library module “mimetypes” where on Windows the default list of known file locations are writable meaning other users can create invalid files to cause MemoryError to be raised on Python runtime startup or have file extensions be interpreted as the incorrect file type.
This defect is caused by the default locations of Linux and macOS platforms (such as “/etc/mime.types”) also being used on Windows, where they are user-writable locations (“C:\etc\mime.types”).
To work-around this issue a user can call mimetypes.init() with an empty list (“[]”) on Windows platforms to avoid using the default list of known file locations.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 0 |
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cve-2024-7592
Vulnerability from cvelistv5
Published
2024-08-19 19:06
Modified
2025-01-31 19:55
Severity ?
EPSS score ?
Summary
There is a LOW severity vulnerability affecting CPython, specifically the
'http.cookies' standard library module.
When parsing cookies that contained backslashes for quoted characters in
the cookie value, the parser would use an algorithm with quadratic
complexity, resulting in excess CPU resources being used while parsing the
value.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
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cve-2023-6507
Vulnerability from cvelistv5
Published
2023-12-08 18:20
Modified
2024-08-02 08:35
Severity ?
EPSS score ?
Summary
An issue was found in CPython 3.12.0 `subprocess` module on POSIX platforms. The issue was fixed in CPython 3.12.1 and does not affect other stable releases.
When using the `extra_groups=` parameter with an empty list as a value (ie `extra_groups=[]`) the logic regressed to not call `setgroups(0, NULL)` before calling `exec()`, thus not dropping the original processes' groups before starting the new process. There is no issue when the parameter isn't used or when any value is used besides an empty list.
This issue only impacts CPython processes run with sufficient privilege to make the `setgroups` system call (typically `root`).
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Python Software Foundation | CPython |
Version: 3.12.0 Version: 3.13.0a1 |
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