CVE-2021-3177
critical · 9.8Python 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.
9.8
CVSS
23.3%
EPSS (exploit prob.)
98th
EPSS percentile
2021-01-19
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-120
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| python | python | >= 3.6.0, <= 3.6.12 |
| python | python | >= 3.7.0, <= 3.7.9 |
| python | python | >= 3.8.0, <= 3.8.7 |
| python | python | >= 3.9.0, <= 3.9.1 |
| fedoraproject | fedora | 32 |
| fedoraproject | fedora | 33 |
| netapp | active_iq_unified_manager | all versions |
| netapp | active_iq_unified_manager | all versions |
| netapp | ontap_select_deploy_administration_utility | all versions |
| debian | debian_linux | 9.0 |
| oracle | communications_cloud_native_core_network_function_cloud_native_environment | 22.2.0 |
| oracle | communications_offline_mediation_controller | 12.0.0.3.0 |
| oracle | communications_pricing_design_center | 12.0.0.3.0 |
| oracle | enterprise_manager_ops_center | 12.4.0.0 |
| oracle | zfs_storage_appliance_kit | 8.8 |
Check a specific version with /api/v1/cve/match.
References
- https://bugs.python.org/issue42938
- https://github.com/python/cpython/pull/24239
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
- https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html
- https://lists.debian.org/debian-lts-announce/2022/02/msg00013.html
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/
- https://news.ycombinator.com/item?id=26185005
- https://python-security.readthedocs.io/vuln/ctypes-buffer-overflow-pycarg_repr.html
- https://security.gentoo.org/glsa/202101-18
- https://security.netapp.com/advisory/ntap-20210226-0003/
- https://www.oracle.com//security-alerts/cpujul2021.html
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2021-3177