CVE-2021-3177

Description

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.

CVSS breakdown

Affected products

• Debian / debian_linux9.0 – 9.0
• fedoraproject / fedora32 – 32
• fedoraproject / fedora33 – 33
• NetApp / active_iq_unified_manager
• NetApp / active_iq_unified_manager
• NetApp / ONTAP Select Deploy administration utility
• oracle / communications_cloud_native_core_network_function_cloud_native_environment22.2.0 – 22.2.0
• oracle / communications_offline_mediation_controller12.0.0.3.0 – 12.0.0.3.0
• oracle / communications_pricing_design_center12.0.0.3.0 – 12.0.0.3.0
• oracle / enterprise_manager_ops_center12.4.0.0 – 12.4.0.0
• oracle / zfs_storage_appliance_kit8.8 – 8.8
• Python / python3.6.0 – 3.6.12

References

• MISChttps://bugs.python.org/issue42938
• PATCHhttps://github.com/python/cpython/pull/24239
• MISChttps://python-security.readthedocs.io/vuln/ctypes-buffer-overflow-pycarg_repr.html
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MGSV6BJQLRQ6RKVUXK7JGU7TP4QFGQXC/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NQPARTLNSFQVMMQHPNBFOCOZOO3TMQNA/
• MISChttps://security.gentoo.org/glsa/202101-18
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7GZV74KM72O2PEJN2C4XP3V5Q5MZUOO/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCFZMVRQUKCBQIG5F2CBVADK63NFSE4A/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BRHOCQYX3QLDGDQGTWQAUUT2GGIZCZUO/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NXSMBHES3ANXXS2RSO5G6Q24BR4B2PWK/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V6XJAULOS5JVB2L67NCKKMJ5NTKZJBSD/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YDTZVGSXQ7HR7OCGSUHTRNTMBG43OMKU/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y4KSYYWMGAKOA2JVCQA422OINT6CKQ7O/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FPE7SMXYUIWPOIZV4DQYXODRXMFX3C5E/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HCQTCSP6SCVIYNIRUJC5X7YBVUHPLSC4/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NODWHDIFBQE5RU5PUWUVE47JOT5VCMJ2/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MP572OLHMS7MZO4KUPSCIMSZIA5IZZ62/
• MAILING_LISThttps://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FONHJIOZOFD7CD35KZL6SVBUTMBPGZGA/
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2021/04/msg00005.html
• VENDOR_ADVISORYhttps://www.oracle.com//security-alerts/cpujul2021.html
• MISChttps://news.ycombinator.com/item?id=26185005
• MISChttps://security.netapp.com/advisory/ntap-20210226-0003/
• VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2021.html
• VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujan2022.html
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2022/02/msg00013.html
• VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujul2022.html
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2023/05/msg00024.html