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    Mageia 2020-0464: openjpeg2 security update

    Date 20 Dec 2020
    291
    Posted By LinuxSecurity Advisories
    A heap-buffer overwrites error was discovered in lib/openjp2/mqc.c in OpenJPEG 2.3.1. The vulnerability causes an out-of-bounds write, which may lead to remote denial of service or possibly remote code execution (CVE-2020-27814). A flaw was found in OpenJPEG’s encoder. This flaw allows an attacker to pass
    MGASA-2020-0464 - Updated openjpeg2 packages fix security vulnerabilities
    
    Publication date: 20 Dec 2020
    URL: https://advisories.mageia.org/MGASA-2020-0464.html
    Type: security
    Affected Mageia releases: 7
    CVE: CVE-2020-27814,
         CVE-2020-27823,
         CVE-2020-27824
    
    A heap-buffer overwrites error was discovered in lib/openjp2/mqc.c in OpenJPEG
    2.3.1. The vulnerability causes an out-of-bounds write, which may lead to
    remote denial of service or possibly remote code execution (CVE-2020-27814).
    
    A flaw was found in OpenJPEG’s encoder. This flaw allows an attacker to pass
    specially crafted x,y offset input to OpenJPEG to use during encoding. The
    highest threat from this vulnerability is to confidentiality, integrity, as
    well as system availability (CVE-2020-27823).
    
    There is a flaw in openjpeg's encoder in the opj_dwt_calc_explicit_stepsizes()
    function. An attacker who is able to supply crafted input to decomposition
    levels could cause a buffer overflow, potentially causing an impact to
    application availability (CVE-2020-27824).
    
    References:
    - https://bugs.mageia.org/show_bug.cgi?id=27822
    - https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./thread/IT4DFBK3FQCB3UOEAZ4XYIDFSWQRMNDX/
    - https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it./thread/OQR4EWRFFZQDMFPZKFZ6I3USLMW6TKTP/
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27814
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27823
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27824
    
    SRPMS:
    - 7/core/openjpeg2-2.3.1-1.5.mga7
    

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