CVE-2017-1000158

Published: 17 November 2017

CPython (aka Python) up to 2.7.13 is vulnerable to an integer overflow in the PyString_DecodeEscape function in stringobject.c, resulting in heap-based buffer overflow (and possible arbitrary code execution)

Notes

Author	Note
tyhicks	PyBytes_DecodeEscape() may be affected in Python 3.x versions. Please check.
mdeslaur	per upstream bug, 3.6 and 3.7 aren't affected

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
python2.7 Launchpad, Ubuntu, Debian	artful	Not vulnerable (2.7.14-2ubuntu2)
	bionic	Not vulnerable
	disco	Not vulnerable
	eoan	Not vulnerable
	focal	Not vulnerable
	groovy	Not vulnerable
	hirsute	Not vulnerable
	impish	Not vulnerable
	jammy	Not vulnerable
	kinetic	Not vulnerable
	lunar	Does not exist
	trusty	Released (2.7.6-8ubuntu0.4)
	upstream	Released (2.7.13-4)
	xenial	Released (2.7.12-1ubuntu0~16.04.2)
	zesty	Released (2.7.13-2ubuntu0.1)
python3.4 Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Released (3.4.3-1ubuntu1~14.04.6)
	upstream	Needs triage
	xenial	Does not exist
	zesty	Does not exist
python3.5 Launchpad, Ubuntu, Debian	artful	Does not exist
	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Released (3.5.2-2ubuntu0~16.04.4~14.04.1)
	upstream	Needs triage
	xenial	Released (3.5.2-2ubuntu0~16.04.4)
	zesty	Released (3.5.3-1ubuntu0~17.04.2)
python3.6 Launchpad, Ubuntu, Debian	artful	Not vulnerable (code not present)
	bionic	Not vulnerable (code not present)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	zesty	Not vulnerable (code not present)
python3.7 Launchpad, Ubuntu, Debian	artful	Not vulnerable (code not present)
	bionic	Not vulnerable (code not present)
	disco	Not vulnerable (code not present)
	eoan	Not vulnerable (code not present)
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
	zesty	Does not exist

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Bugs

https://bugs.python.org/issue30657

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