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amazonAmazonALAS-2018-945
HistoryFeb 07, 2018 - 5:02 p.m.

Medium: python27

2018-02-0717:02:00
alas.aws.amazon.com
20

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

0.014 Low

EPSS

Percentile

86.4%

Issue Overview:

Integer overflow in PyString_DecodeEscape results in heap-base buffer overflow
CPython (aka Python) 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) (CVE-2017-1000158)

Affected Packages:

python27

Issue Correction:
Run yum update python27 to update your system.

New Packages:

i686:  
    python27-2.7.13-2.122.amzn1.i686  
    python27-devel-2.7.13-2.122.amzn1.i686  
    python27-test-2.7.13-2.122.amzn1.i686  
    python27-libs-2.7.13-2.122.amzn1.i686  
    python27-tools-2.7.13-2.122.amzn1.i686  
    python27-debuginfo-2.7.13-2.122.amzn1.i686  
  
src:  
    python27-2.7.13-2.122.amzn1.src  
  
x86_64:  
    python27-debuginfo-2.7.13-2.122.amzn1.x86_64  
    python27-2.7.13-2.122.amzn1.x86_64  
    python27-test-2.7.13-2.122.amzn1.x86_64  
    python27-tools-2.7.13-2.122.amzn1.x86_64  
    python27-libs-2.7.13-2.122.amzn1.x86_64  
    python27-devel-2.7.13-2.122.amzn1.x86_64  

Additional References

Red Hat: CVE-2017-1000158

Mitre: CVE-2017-1000158

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

0.014 Low

EPSS

Percentile

86.4%