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amazonAmazonALAS-2020-1406
HistoryJul 27, 2020 - 11:54 p.m.

Medium: python26

2020-07-2723:54:00
alas.aws.amazon.com
55

7.1 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.006 Low

EPSS

Percentile

78.5%

JSON

Issue Overview:

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking. (CVE-2020-8492)

Affected Packages:

python26

Issue Correction:
Run yum update python26 to update your system.

New Packages:

i686:  
    python26-2.6.9-2.90.amzn1.i686  
    python26-debuginfo-2.6.9-2.90.amzn1.i686  
    python26-devel-2.6.9-2.90.amzn1.i686  
    python26-libs-2.6.9-2.90.amzn1.i686  
    python26-test-2.6.9-2.90.amzn1.i686  
    python26-tools-2.6.9-2.90.amzn1.i686  
  
src:  
    python26-2.6.9-2.90.amzn1.src  
  
x86_64:  
    python26-debuginfo-2.6.9-2.90.amzn1.x86_64  
    python26-devel-2.6.9-2.90.amzn1.x86_64  
    python26-test-2.6.9-2.90.amzn1.x86_64  
    python26-2.6.9-2.90.amzn1.x86_64  
    python26-tools-2.6.9-2.90.amzn1.x86_64  
    python26-libs-2.6.9-2.90.amzn1.x86_64

Additional References

Red Hat: CVE-2020-8492

Mitre: CVE-2020-8492

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686python26< 2.6.9-2.90.amzn1python26-2.6.9-2.90.amzn1.i686.rpm
Amazon Linux1i686python26-debuginfo< 2.6.9-2.90.amzn1python26-debuginfo-2.6.9-2.90.amzn1.i686.rpm
Amazon Linux1i686python26-devel< 2.6.9-2.90.amzn1python26-devel-2.6.9-2.90.amzn1.i686.rpm
Amazon Linux1i686python26-libs< 2.6.9-2.90.amzn1python26-libs-2.6.9-2.90.amzn1.i686.rpm
Amazon Linux1i686python26-test< 2.6.9-2.90.amzn1python26-test-2.6.9-2.90.amzn1.i686.rpm
Amazon Linux1i686python26-tools< 2.6.9-2.90.amzn1python26-tools-2.6.9-2.90.amzn1.i686.rpm
Amazon Linux1x86_64python26-debuginfo< 2.6.9-2.90.amzn1python26-debuginfo-2.6.9-2.90.amzn1.x86_64.rpm
Amazon Linux1x86_64python26-devel< 2.6.9-2.90.amzn1python26-devel-2.6.9-2.90.amzn1.x86_64.rpm
Amazon Linux1x86_64python26-test< 2.6.9-2.90.amzn1python26-test-2.6.9-2.90.amzn1.x86_64.rpm
Amazon Linux1x86_64python26< 2.6.9-2.90.amzn1python26-2.6.9-2.90.amzn1.x86_64.rpm
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7.1 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:N/I:N/A:C

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

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User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.006 Low

EPSS

Percentile

78.5%

JSON
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