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    Debian LTS: DLA-2527-1: snapd security update

    Date 17 Jan 2021
    521
    Posted By LinuxSecurity Advisories
    golang-go.crypto was recently updated with a fix for CVE-2019-11840. This in turn requires all packages that use the affected code to be recompiled in order to pick up the security fix.
    
    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-2527-1                This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/lts/security/                            Brian May
    January 18, 2021                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------
    
    Package        : snapd
    Version        : 2.21-2+deb9u1
    CVE ID         : CVE-2019-11840
    
    golang-go.crypto was recently updated with a fix for CVE-2019-11840. This in
    turn requires all packages that use the affected code to be recompiled in order
    to pick up the security fix.
    
    CVE-2019-11840
    
        An issue was discovered in supplementary Go cryptography libraries, aka
        golang-googlecode-go-crypto. If more than 256 GiB of keystream is
        generated, or if the counter otherwise grows greater than 32 bits, the amd64
        implementation will first generate incorrect output, and then cycle back to
        previously generated keystream. Repeated keystream bytes can lead to loss of
        confidentiality in encryption applications, or to predictability in CSPRNG
        applications.
    
    For Debian 9 stretch, this problem has been fixed in version
    2.21-2+deb9u1.
    
    We recommend that you upgrade your snapd packages.
    
    For the detailed security status of snapd please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/snapd
    
    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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