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    Debian LTS: DLA-2531-1: python-bottle security update

    Date 24 Jan 2021
    286
    Posted By LinuxSecurity Advisories
    The package src:python-bottle before 0.12.19 are vulnerable to Web Cache Poisoning by using a vector called parameter cloaking. When the attacker can separate query parameters using a
    
    - -----------------------------------------------------------------------
    Debian LTS Advisory DLA-2531-1              This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/lts/security/                      Utkarsh Gupta
    January 24, 2021                            https://wiki.debian.org/LTS
    - -----------------------------------------------------------------------
    
    Package        : python-bottle
    Version        : 0.12.13-1+deb9u1
    CVE ID         : CVE-2020-28473
    
    The package src:python-bottle before 0.12.19 are vulnerable to
    Web Cache Poisoning by using a vector called parameter cloaking.
    
    When the attacker can separate query parameters using a
    semicolon (;), they can cause a difference in the interpretation
    of the request between the proxy (running with default configuration)
    and the server. This can result in malicious requests being cached
    as completely safe ones, as the proxy would usually not see the
    semicolon as a separator, and therefore would not include it in a
    cache key of an unkeyed parameter.
    
    For Debian 9 stretch, this problem has been fixed in version
    0.12.13-1+deb9u1.
    
    We recommend that you upgrade your python-bottle packages.
    
    For the detailed security status of python-bottle please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/python-bottle
    
    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS
    

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