Vulnerability Details : CVE-2021-3177
Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely.
Vulnerability category: OverflowExecute code
Exploit prediction scoring system (EPSS) score for CVE-2021-3177
Probability of exploitation activity in the next 30 days: 1.94%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 87 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2021-3177
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
[email protected] |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
[email protected] |
CWE ids for CVE-2021-3177
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: [email protected] (Primary)
References for CVE-2021-3177
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/
Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
-
https://www.oracle.com//security-alerts/cpujul2021.html
Patch;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujan2022.html
Patch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html
Mailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/
Third Party Advisory
-
https://github.com/python/cpython/pull/24239
Patch;Third Party Advisory
-
https://bugs.python.org/issue42938
Exploit;Issue Tracking;Patch;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/
Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2022/02/msg00013.html
Mailing List;Third Party Advisory
-
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E
Mailing List;Third Party Advisory
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https://security.gentoo.org/glsa/202101-18
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/
Third Party Advisory
-
https://www.oracle.com/security-alerts/cpuoct2021.html
Patch;Third Party Advisory
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https://news.ycombinator.com/item?id=26185005
Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/
Third Party Advisory
-
https://python-security.readthedocs.io/vuln/ctypes-buffer-overflow-pycarg_repr.html
Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujul2022.html
Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/[email protected]/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/
Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20210226-0003/
Third Party Advisory
Products affected by CVE-2021-3177
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*
- Oracle » Communications Cloud Native Core Network Function Cloud Native Environment » Version: 22.2.0cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:22.2.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
- cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
- cpe:2.3:a:python:python:*:*:*:*:*:*:*:*