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Debian LTS: Security Advisory for python3.5 (DLA-2808-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'python3.5' package(s) announced via the DLA-2808-1 advisory.
Insight
Insight
There were a couple of vulnerabilities found in src:python3.5, the Python interpreter v3.5, and are as follows: CVE-2021-3733 The ReDoS-vulnerable regex has quadratic worst-case complexity and it allows cause a denial of service when identifying crafted invalid RFCs. This ReDoS issue is on the client side and needs remote attackers to control the HTTP server. CVE-2021-3737 HTTP client can get stuck infinitely reading len(line) < 64k lines after receiving a '100 Continue' HTTP response. This could lead to the client being a bandwidth sink for anyone in control of a server.
Affected Software
Affected Software
'python3.5' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, these problems have been fixed in version 3.5.3-1+deb9u5. We recommend that you upgrade your python3.5 packages.