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ubuntucveUbuntu.comUB:CVE-2021-3177
HistoryJan 19, 2021 - 12:00 a.m.

CVE-2021-3177

2021-01-1900:00:00
ubuntu.com
ubuntu.com
23

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.04 Low

EPSS

Percentile

92.0%

JSON

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.

Notes

Author Note
mdeslaur on Ubuntu, binaries are compiled with Fortify Source, so exploiting this issue will likely only cause Python to crash, leading to a denial of service.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchpython2.7< 2.7.17-1~18.04ubuntu1.6UNKNOWN
ubuntu20.04noarchpython2.7< 2.7.18-1~20.04.1UNKNOWN
ubuntu14.04noarchpython2.7< 2.7.6-8ubuntu0.6+esm10) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchpython2.7< 2.7.12-1ubuntu0~16.04.18UNKNOWN
ubuntu14.04noarchpython3.4< 3.4.3-1ubuntu1~14.04.7+esm10) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu14.04noarchpython3.5< anyUNKNOWN
ubuntu16.04noarchpython3.5< 3.5.2-2ubuntu0~16.04.13UNKNOWN
ubuntu18.04noarchpython3.6< 3.6.9-1~18.04ubuntu1.4UNKNOWN
ubuntu18.04noarchpython3.7< 3.7.5-2~18.04.4UNKNOWN
ubuntu18.04noarchpython3.8< 3.8.0-3~18.04.1UNKNOWN
Rows per page:
1-10 of 141

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9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.04 Low

EPSS

Percentile

92.0%

JSON
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