ArchLinux: 201903-4: pcre: denial of service

    Date04 Mar 2019
    CategoryArchLinux
    492
    Posted ByLinuxSecurity Advisories
    The package pcre before version 8.43-1 is vulnerable to denial of service.
    Arch Linux Security Advisory ASA-201903-4
    =========================================
    
    Severity: Low
    Date    : 2019-03-03
    CVE-ID  : CVE-2017-11164
    Package : pcre
    Type    : denial of service
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-351
    
    Summary
    =======
    
    The package pcre before version 8.43-1 is vulnerable to denial of
    service.
    
    Resolution
    ==========
    
    Upgrade to 8.43-1.
    
    # pacman -Syu "pcre>=8.43-1"
    
    The problem has been fixed upstream in version 8.43.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    In PCRE 8.41, the OP_KETRMAX feature in the match function in
    pcre_exec.c allows stack exhaustion (uncontrolled recursion) when
    processing a crafted regular expression.
    
    Impact
    ======
    
    A remote attacker can crash the process with a crafted regular
    expression.
    
    References
    ==========
    
    http://seclists.org/oss-sec/2017/q3/111
    https://bugzilla.redhat.com/show_bug.cgi?id=1470107
    https://security.archlinux.org/CVE-2017-11164
    
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