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"cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.3-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3729", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby23-ruby-0:2.3.8-69.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3730", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby24-ruby-0:2.4.5-91.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2018-11-29T00:00:00Z"}, {"advisory": "RHSA-2018:3731", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-ruby25-ruby-0:2.5.3-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2018-11-29T00:00:00Z"}], "bugzilla": {"description": "ruby: Buffer under-read in String#unpack", "id": "1561953", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1561953"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.8", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L", "status": "verified"}, "cwe": "CWE-22", "details": ["In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.", "A integer underflow was found in the way String#unpack decodes the unpacking format. An attacker, able to control the unpack format, could use this flaw to disclose arbitrary parts of the application's memory."], "mitigation": {"lang": "en:us", "value": "Vulnerable code when String#unpack's argument is attacker controlled.\nIn the unpack format string argemument, manual sanitization can be done by preventing the number following '@' to overflow to a negative number. See https://dev.to/sqreenio/an-in-depth-look-at-cve-2018-8878-or-why-integer-overflows-are-still-a-thing-1n01 for mitigation details."}, "name": "CVE-2018-8778", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ruby", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:rhel_software_collections:3", "fix_state": "Will not fix", "package_name": "rh-ruby22-ruby", "product_name": "Red Hat Software Collections"}, {"cpe": "cpe:/a:rhel_sam:1", "fix_state": "Will not fix", "package_name": "ruby193-ruby", "product_name": "Red Hat Subscription Asset Manager"}], "public_date": "2018-03-28T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-8778\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-8778\nhttps://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/"], "statement": "This issue affects the versions of ruby as shipped with Red Hat CloudForms 4. Red Hat Product Security has rated this issue as having security impact of Moderate. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.\nThis issue affects the versions of ruby as shipped with Red Hat Subscription Asset Manager 1. Red Hat Product Security has rated this issue as having security impact of Moderate. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.", "threat_severity": "Moderate", "upstream_fix": "ruby 2.2.10, ruby 2.3.7, ruby 2.4.4, ruby 2.5.1"}