Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2018-20852: 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. 1740347: CVE-2018-20852 python: Cookie domain check returns incorrect results
Fixed packages 8
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | python | 0:2.7.18-1.amzn2 |
| Amazon Linux · 2 | python-debug | 0:2.7.18-1.amzn2 |
| Amazon Linux · 2 | python-debuginfo | 0:2.7.18-1.amzn2 |
| Amazon Linux · 2 | python-devel | 0:2.7.18-1.amzn2 |
| Amazon Linux · 2 | python-libs | 0:2.7.18-1.amzn2 |
| Amazon Linux · 2 | python-test | 0:2.7.18-1.amzn2 |
| Amazon Linux · 2 | python-tools | 0:2.7.18-1.amzn2 |
| Amazon Linux · 2 | tkinter | 0:2.7.18-1.amzn2 |
Vulnerabilities 1
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Medium 4.3
http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in Python before 3.7.3 does not correctly valida…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2018-20852.html