Amazon Linux AMI update for python27

Published: 2018-12-07 10:07:43 | Updated: 2018-12-07
Severity Medium
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2018-1061
CVE-2018-1060
CVSSv3 7.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
7.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CWE ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software Amazon Linux AMI
Vulnerable software versions Amazon Linux AMI 2017.03
Vendor URL Amazon Web Services, Inc.

Security Advisory

1) Improper input validation

Description

The vulnerability allows a remote attacker to cause DoS condition on he target system.

The weakness exists due to the way catastrophic backtracking was implemented in python's difflib.IS_LINE_JUNK method difflib. A remote attacker can cause the service to crash.

Remediation

Update the affected packages.

i686:
    python27-libs-2.7.15-1.124.amzn1.i686
    python27-debuginfo-2.7.15-1.124.amzn1.i686
    python27-test-2.7.15-1.124.amzn1.i686
    python27-2.7.15-1.124.amzn1.i686
    python27-devel-2.7.15-1.124.amzn1.i686
    python27-tools-2.7.15-1.124.amzn1.i686

src:
    python27-2.7.15-1.124.amzn1.src

x86_64:
    python27-debuginfo-2.7.15-1.124.amzn1.x86_64
    python27-libs-2.7.15-1.124.amzn1.x86_64
    python27-devel-2.7.15-1.124.amzn1.x86_64
    python27-tools-2.7.15-1.124.amzn1.x86_64
    python27-test-2.7.15-1.124.amzn1.x86_64
    python27-2.7.15-1.124.amzn1.x86_64

External links

https://alas.aws.amazon.com/ALAS-2018-1108.html

2) Improper input validation

Description

The vulnerability allows a remote attacker to cause DoS condition on he target system.

The weakness exists due to the way catastrophic backtracking was implemented in apop() method in pop3lib. A remote attacker can cause the service to crash.

Remediation

Update the affected packages.

i686:
    python27-libs-2.7.15-1.124.amzn1.i686
    python27-debuginfo-2.7.15-1.124.amzn1.i686
    python27-test-2.7.15-1.124.amzn1.i686
    python27-2.7.15-1.124.amzn1.i686
    python27-devel-2.7.15-1.124.amzn1.i686
    python27-tools-2.7.15-1.124.amzn1.i686

src:
    python27-2.7.15-1.124.amzn1.src

x86_64:
    python27-debuginfo-2.7.15-1.124.amzn1.x86_64
    python27-libs-2.7.15-1.124.amzn1.x86_64
    python27-devel-2.7.15-1.124.amzn1.x86_64
    python27-tools-2.7.15-1.124.amzn1.x86_64
    python27-test-2.7.15-1.124.amzn1.x86_64
    python27-2.7.15-1.124.amzn1.x86_64

External links

https://alas.aws.amazon.com/ALAS-2018-1108.html

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