Gentoo: GLSA-202003-62: GNU Screen: Buffer overflow

    Date 30 Mar 2020
    281
    Posted By LinuxSecurity Advisories
    A buffer overflow in GNU Screen might allow remote attackers to corrupt memory.
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    Gentoo Linux Security Advisory                           GLSA 202003-62
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                                               https://security.gentoo.org/
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     Severity: Normal
        Title: GNU Screen: Buffer overflow
         Date: March 30, 2020
         Bugs: #708460
           ID: 202003-62
    
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    Synopsis
    ========
    
    A buffer overflow in GNU Screen might allow remote attackers to corrupt
    memory.
    
    Background
    ==========
    
    GNU Screen is a full-screen window manager that multiplexes a physical
    terminal between several processes, typically interactive shells.
    
    Affected packages
    =================
    
        -------------------------------------------------------------------
         Package              /     Vulnerable     /            Unaffected
        -------------------------------------------------------------------
      1  app-misc/screen              < 4.8.0                    >= 4.8.0
    
    Description
    ===========
    
    A buffer overflow was found in the way GNU Screen treated the special
    escape OSC 49.
    
    Impact
    ======
    
    A remote attacker, by writing a specially crafted string of characters
    to a GNU Screen window, could possibly corrupt memory or have other
    unspecified impact.
    
    Workaround
    ==========
    
    There is no known workaround at this time.
    
    Resolution
    ==========
    
    All GNU Screen users should upgrade to the latest version:
    
      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-misc/screen-4.8.0"
    
    References
    ==========
    
    [ 1 ] CVE-2020-9366
          https://nvd.nist.gov/vuln/detail/CVE-2020-9366
    
    Availability
    ============
    
    This GLSA and any updates to it are available for viewing at
    the Gentoo Security Website:
    
     https://security.gentoo.org/glsa/202003-62
    
    Concerns?
    =========
    
    Security is a primary focus of Gentoo Linux and ensuring the
    confidentiality and security of our users' machines is of utmost
    importance to us. Any security concerns should be addressed to
    This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at
    https://bugs.gentoo.org.
    
    License
    =======
    
    Copyright 2020 Gentoo Foundation, Inc; referenced text
    belongs to its owner(s).
    
    The contents of this document are licensed under the
    Creative Commons - Attribution / Share Alike license.
    
    https://creativecommons.org/licenses/by-sa/2.5
    
    

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