Debian: DSA-4031-1: ruby2.3 security update

    Date 11 Nov 2017
    164
    Posted By LinuxSecurity Advisories
    Several vulnerabilities have been discovered in the interpreter for the Ruby language. The Common Vulnerabilities and Exposures project identifies the following problems:
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-4031-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    November 11, 2017                     https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : ruby2.3
    CVE ID         : CVE-2017-0898 CVE-2017-0903 CVE-2017-10784 CVE-2017-14033
    Debian Bug     : 875928 875931 875936 879231
    
    Several vulnerabilities have been discovered in the interpreter for the
    Ruby language. The Common Vulnerabilities and Exposures project
    identifies the following problems:
    
    CVE-2017-0898
    
        aerodudrizzt reported a buffer underrun vulnerability in the sprintf
        method of the Kernel module resulting in heap memory corruption or
        information disclosure from the heap.
    
    CVE-2017-0903
    
        Max Justicz reported that RubyGems is prone to an unsafe object
        deserialization vulnerability. When parsed by an application which
        processes gems, a specially crafted YAML formatted gem specification
        can lead to remote code execution.
    
    CVE-2017-10784
    
        Yusuke Endoh discovered an escape sequence injection vulnerability
        in the Basic authentication of WEBrick. An attacker can take
        advantage of this flaw to inject malicious escape sequences to the
        WEBrick log and potentially execute control characters on the
        victim's terminal emulator when reading logs.
    
    CVE-2017-14033
    
        asac reported a buffer underrun vulnerability in the OpenSSL
        extension. A remote attacker can take advantage of this flaw to
        cause the Ruby interpreter to crash leading to a denial of service.
    
    For the stable distribution (stretch), these problems have been fixed in
    version 2.3.3-1+deb9u2.
    
    We recommend that you upgrade your ruby2.3 packages.
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    

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