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amazonAmazonALAS-2018-1003
HistoryApr 26, 2018 - 5:28 p.m.

Medium: python34, python35, python36, python27

2018-04-2617:28:00
alas.aws.amazon.com
16

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.006 Low

EPSS

Percentile

78.9%

Issue Overview:

DOS via regular expression catastrophic backtracking in apop() method in pop3lib
A flaw was found in the way catastrophic backtracking was implemented in python’s pop3lib’s apop() method. An attacker could use this flaw to cause denial of service. (CVE-2018-1060)

DOS via regular expression backtracking in difflib.IS_LINE_JUNK method in difflib
A flaw was found in the way catastrophic backtracking was implemented in python’s difflib.IS_LINE_JUNK method. An attacker could use this flaw to cause denial of service. (CVE-2018-1061)

Affected Packages:

python34, python35, python36, python27

Issue Correction:
Run yum update python34 to update your system.
Run yum update python35 to update your system.
Run yum update python36 to update your system.

New Packages:

i686:  
    python34-test-3.4.8-1.39.amzn1.i686  
    python34-devel-3.4.8-1.39.amzn1.i686  
    python34-libs-3.4.8-1.39.amzn1.i686  
    python34-debuginfo-3.4.8-1.39.amzn1.i686  
    python34-tools-3.4.8-1.39.amzn1.i686  
    python34-3.4.8-1.39.amzn1.i686  
    python35-tools-3.5.5-1.12.amzn1.i686  
    python35-test-3.5.5-1.12.amzn1.i686  
    python35-devel-3.5.5-1.12.amzn1.i686  
    python35-3.5.5-1.12.amzn1.i686  
    python35-debuginfo-3.5.5-1.12.amzn1.i686  
    python35-libs-3.5.5-1.12.amzn1.i686  
    python36-devel-3.6.5-1.9.amzn1.i686  
    python36-debug-3.6.5-1.9.amzn1.i686  
    python36-test-3.6.5-1.9.amzn1.i686  
    python36-debuginfo-3.6.5-1.9.amzn1.i686  
    python36-libs-3.6.5-1.9.amzn1.i686  
    python36-3.6.5-1.9.amzn1.i686  
    python36-tools-3.6.5-1.9.amzn1.i686  
    python27-libs-2.7.14-1.123.amzn1.i686  
    python27-2.7.14-1.123.amzn1.i686  
    python27-debuginfo-2.7.14-1.123.amzn1.i686  
    python27-test-2.7.14-1.123.amzn1.i686  
    python27-devel-2.7.14-1.123.amzn1.i686  
    python27-tools-2.7.14-1.123.amzn1.i686  
  
src:  
    python34-3.4.8-1.39.amzn1.src  
    python35-3.5.5-1.12.amzn1.src  
    python36-3.6.5-1.9.amzn1.src  
    python27-2.7.14-1.123.amzn1.src  
  
x86_64:  
    python34-tools-3.4.8-1.39.amzn1.x86_64  
    python34-libs-3.4.8-1.39.amzn1.x86_64  
    python34-debuginfo-3.4.8-1.39.amzn1.x86_64  
    python34-test-3.4.8-1.39.amzn1.x86_64  
    python34-3.4.8-1.39.amzn1.x86_64  
    python34-devel-3.4.8-1.39.amzn1.x86_64  
    python35-devel-3.5.5-1.12.amzn1.x86_64  
    python35-3.5.5-1.12.amzn1.x86_64  
    python35-debuginfo-3.5.5-1.12.amzn1.x86_64  
    python35-test-3.5.5-1.12.amzn1.x86_64  
    python35-libs-3.5.5-1.12.amzn1.x86_64  
    python35-tools-3.5.5-1.12.amzn1.x86_64  
    python36-tools-3.6.5-1.9.amzn1.x86_64  
    python36-test-3.6.5-1.9.amzn1.x86_64  
    python36-devel-3.6.5-1.9.amzn1.x86_64  
    python36-3.6.5-1.9.amzn1.x86_64  
    python36-debug-3.6.5-1.9.amzn1.x86_64  
    python36-debuginfo-3.6.5-1.9.amzn1.x86_64  
    python36-libs-3.6.5-1.9.amzn1.x86_64  
    python27-debuginfo-2.7.14-1.123.amzn1.x86_64  
    python27-libs-2.7.14-1.123.amzn1.x86_64  
    python27-test-2.7.14-1.123.amzn1.x86_64  
    python27-tools-2.7.14-1.123.amzn1.x86_64  
    python27-devel-2.7.14-1.123.amzn1.x86_64  
    python27-2.7.14-1.123.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-1060, CVE-2018-1061

Mitre: CVE-2018-1060, CVE-2018-1061

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.006 Low

EPSS

Percentile

78.9%