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amazonAmazonALAS-2021-1484
HistoryFeb 23, 2021 - 8:18 p.m.

Medium: python27, python36, python38

2021-02-2320:18:00
alas.aws.amazon.com
35

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

Issue Overview:

A flaw was found in python. A stack-based buffer overflow was discovered in the ctypes module provided within Python. Applications that use ctypes without carefully validating the input passed to it may be vulnerable to this flaw, which would allow an attacker to overflow a buffer on the stack and crash the application. The highest threat from this vulnerability is to system availability. (CVE-2021-3177)

Affected Packages:

python27, python36, python38

Issue Correction:
Run yum update python27 to update your system.
Run yum update python36 to update your system.
Run yum update python38 to update your system.

New Packages:

i686:  
    python38-3.8.5-1.5.amzn1.i686  
    python38-libs-3.8.5-1.5.amzn1.i686  
    python38-devel-3.8.5-1.5.amzn1.i686  
    python38-debuginfo-3.8.5-1.5.amzn1.i686  
    python38-debug-3.8.5-1.5.amzn1.i686  
    python38-test-3.8.5-1.5.amzn1.i686  
    python38-tools-3.8.5-1.5.amzn1.i686  
    python27-tools-2.7.18-2.141.amzn1.i686  
    python27-test-2.7.18-2.141.amzn1.i686  
    python27-libs-2.7.18-2.141.amzn1.i686  
    python27-debuginfo-2.7.18-2.141.amzn1.i686  
    python27-devel-2.7.18-2.141.amzn1.i686  
    python27-2.7.18-2.141.amzn1.i686  
    python36-debug-3.6.12-1.20.amzn1.i686  
    python36-3.6.12-1.20.amzn1.i686  
    python36-devel-3.6.12-1.20.amzn1.i686  
    python36-test-3.6.12-1.20.amzn1.i686  
    python36-debuginfo-3.6.12-1.20.amzn1.i686  
    python36-tools-3.6.12-1.20.amzn1.i686  
    python36-libs-3.6.12-1.20.amzn1.i686  
  
src:  
    python38-3.8.5-1.5.amzn1.src  
    python27-2.7.18-2.141.amzn1.src  
    python36-3.6.12-1.20.amzn1.src  
  
x86_64:  
    python38-test-3.8.5-1.5.amzn1.x86_64  
    python38-libs-3.8.5-1.5.amzn1.x86_64  
    python38-3.8.5-1.5.amzn1.x86_64  
    python38-tools-3.8.5-1.5.amzn1.x86_64  
    python38-devel-3.8.5-1.5.amzn1.x86_64  
    python38-debuginfo-3.8.5-1.5.amzn1.x86_64  
    python38-debug-3.8.5-1.5.amzn1.x86_64  
    python27-debuginfo-2.7.18-2.141.amzn1.x86_64  
    python27-libs-2.7.18-2.141.amzn1.x86_64  
    python27-test-2.7.18-2.141.amzn1.x86_64  
    python27-2.7.18-2.141.amzn1.x86_64  
    python27-devel-2.7.18-2.141.amzn1.x86_64  
    python27-tools-2.7.18-2.141.amzn1.x86_64  
    python36-debug-3.6.12-1.20.amzn1.x86_64  
    python36-debuginfo-3.6.12-1.20.amzn1.x86_64  
    python36-3.6.12-1.20.amzn1.x86_64  
    python36-devel-3.6.12-1.20.amzn1.x86_64  
    python36-libs-3.6.12-1.20.amzn1.x86_64  
    python36-tools-3.6.12-1.20.amzn1.x86_64  
    python36-test-3.6.12-1.20.amzn1.x86_64

Additional References

Red Hat: CVE-2021-3177

Mitre: CVE-2021-3177

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686python38< 3.8.5-1.5.amzn1python38-3.8.5-1.5.amzn1.i686.rpm
Amazon Linux1i686python38-libs< 3.8.5-1.5.amzn1python38-libs-3.8.5-1.5.amzn1.i686.rpm
Amazon Linux1i686python38-devel< 3.8.5-1.5.amzn1python38-devel-3.8.5-1.5.amzn1.i686.rpm
Amazon Linux1i686python38-debuginfo< 3.8.5-1.5.amzn1python38-debuginfo-3.8.5-1.5.amzn1.i686.rpm
Amazon Linux1i686python38-debug< 3.8.5-1.5.amzn1python38-debug-3.8.5-1.5.amzn1.i686.rpm
Amazon Linux1i686python38-test< 3.8.5-1.5.amzn1python38-test-3.8.5-1.5.amzn1.i686.rpm
Amazon Linux1i686python38-tools< 3.8.5-1.5.amzn1python38-tools-3.8.5-1.5.amzn1.i686.rpm
Amazon Linux1i686python27-tools< 2.7.18-2.141.amzn1python27-tools-2.7.18-2.141.amzn1.i686.rpm
Amazon Linux1i686python27-test< 2.7.18-2.141.amzn1python27-test-2.7.18-2.141.amzn1.i686.rpm
Amazon Linux1i686python27-libs< 2.7.18-2.141.amzn1python27-libs-2.7.18-2.141.amzn1.i686.rpm
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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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