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
7 High
AI Score
Confidence
High
7.1 High
CVSS2
Access Vector
NETWORK
Access 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
0.008 Low
EPSS
Percentile
81.7%
Issue Overview:
http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in Python before 3.7.3 does not correctly validate the domain: it can be tricked into sending existing cookies to the wrong server. An attacker may abuse this flaw by using a server with a hostname that has another valid hostname as a suffix (e.g., pythonicexample.com to steal cookies for example.com). When a program uses http.cookiejar.DefaultPolicy and tries to do an HTTP connection to an attacker-controlled server, existing cookies can be leaked to the attacker. This affects 2.x through 2.7.16, 3.x before 3.4.10, 3.5.x before 3.5.7, 3.6.x before 3.6.9, and 3.7.x before 3.7.3.(CVE-2018-20852)
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:
python
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update python to update your system.
New Packages:
aarch64:
python-2.7.18-1.amzn2.aarch64
python-libs-2.7.18-1.amzn2.aarch64
python-devel-2.7.18-1.amzn2.aarch64
python-tools-2.7.18-1.amzn2.aarch64
tkinter-2.7.18-1.amzn2.aarch64
python-test-2.7.18-1.amzn2.aarch64
python-debug-2.7.18-1.amzn2.aarch64
python-debuginfo-2.7.18-1.amzn2.aarch64
i686:
python-2.7.18-1.amzn2.i686
python-libs-2.7.18-1.amzn2.i686
python-devel-2.7.18-1.amzn2.i686
python-tools-2.7.18-1.amzn2.i686
tkinter-2.7.18-1.amzn2.i686
python-test-2.7.18-1.amzn2.i686
python-debug-2.7.18-1.amzn2.i686
python-debuginfo-2.7.18-1.amzn2.i686
src:
python-2.7.18-1.amzn2.src
x86_64:
python-2.7.18-1.amzn2.x86_64
python-libs-2.7.18-1.amzn2.x86_64
python-devel-2.7.18-1.amzn2.x86_64
python-tools-2.7.18-1.amzn2.x86_64
tkinter-2.7.18-1.amzn2.x86_64
python-test-2.7.18-1.amzn2.x86_64
python-debug-2.7.18-1.amzn2.x86_64
python-debuginfo-2.7.18-1.amzn2.x86_64
Red Hat: CVE-2018-20852, CVE-2020-8492
Mitre: CVE-2018-20852, CVE-2020-8492
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | aarch64 | python | < 2.7.18-1.amzn2 | python-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | python-libs | < 2.7.18-1.amzn2 | python-libs-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | python-devel | < 2.7.18-1.amzn2 | python-devel-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | python-tools | < 2.7.18-1.amzn2 | python-tools-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | tkinter | < 2.7.18-1.amzn2 | tkinter-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | python-test | < 2.7.18-1.amzn2 | python-test-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | python-debug | < 2.7.18-1.amzn2 | python-debug-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | python-debuginfo | < 2.7.18-1.amzn2 | python-debuginfo-2.7.18-1.amzn2.aarch64.rpm |
Amazon Linux | 2 | i686 | python | < 2.7.18-1.amzn2 | python-2.7.18-1.amzn2.i686.rpm |
Amazon Linux | 2 | i686 | python-libs | < 2.7.18-1.amzn2 | python-libs-2.7.18-1.amzn2.i686.rpm |
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
7 High
AI Score
Confidence
High
7.1 High
CVSS2
Access Vector
NETWORK
Access 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
0.008 Low
EPSS
Percentile
81.7%