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CVE-2017-1000158

CRITICALCVSS 9.8/10EPSS 7.94%

Last modified

CVE-2017-1000158 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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). EPSS estimates a 7.94% chance of exploitation in the next 30 days.

Description

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)

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
7.94%

94.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PythonPython< 2.7.15
PythonPython>= 3.4.0, < 3.4.8
PythonPython>= 3.5.0, < 3.5.5
DebianDebian Linux7.0
DebianDebian Linux8.0
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-1000158?
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)
How severe is CVE-2017-1000158?
CVE-2017-1000158 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 7.94% probability of exploitation in the next 30 days.
How do I fix CVE-2017-1000158?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST