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    ArchLinux: 202012-24: openssl: denial of service

    Date 31 Dec 2020
    Posted By LinuxSecurity Advisories
    The package openssl before version 1.1.1.i-1 is vulnerable to denial of service.
    Arch Linux Security Advisory ASA-202012-24
    Severity: High
    Date    : 2020-12-16
    CVE-ID  : CVE-2020-1971
    Package : openssl
    Type    : denial of service
    Remote  : Yes
    Link    :
    The package openssl before version 1.1.1.i-1 is vulnerable to denial of
    Upgrade to 1.1.1.i-1.
    # pacman -Syu "openssl>=1.1.1.i-1"
    The problem has been fixed upstream in version 1.1.1.i.
    A denial of service security issue was discovered in OpenSSL before
    1.1.1i. The X.509 GeneralName type is a generic type for representing
    different types of names. One of those name types is known as
    EDIPartyName. OpenSSL provides a function GENERAL_NAME_cmp which
    compares different instances of a GENERAL_NAME to see if they are equal
    or not. This function behaves incorrectly when both GENERAL_NAMEs
    contain an EDIPARTYNAME. A NULL pointer dereference and a crash may
    occur leading to a possible denial of service attack.
    A remote attacker might be able to cause a crash by tricking a
    vulnerable client or server into checking a malicious certificate
    against a malicious CRL.

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