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{"bugzilla": {"description": "mercurial: Path-checking logic bypass via symlinks and subrepositories", "id": "1696025", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1696025"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.1", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-22", "details": ["A flaw was found in Mercurial before 4.9. It was possible to use symlinks and subrepositories to defeat Mercurial's path-checking logic and write files outside a repository.", "Starting with version 1.5.3, Mercurial allows environment variable expansion on path names for sub repositories when creating it or cloning a parent repository, but it doesn't validate whether the final path name outside the repository root directory. An attacker can leverage this weakness using a combination of symbolic links and environment variables to craft a tampered repository, leading Mercurial to write files outside the repository as long the destination location is empty."], "name": "CVE-2019-3902", "package_state": [{"cpe": "cpe:/a:redhat:ansible_tower:3", "fix_state": "Not affected", "package_name": "mercurial", "product_name": "Red Hat Ansible Tower 3"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "mercurial", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "mercurial", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "mercurial", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2019-03-13T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2019-3902\nhttps://nvd.nist.gov/vuln/detail/CVE-2019-3902\nhttps://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_4.9_.282019-02-01.29"], "statement": "This issue affects the versions of mercurial as shipped with Red Hat Enterprise Linux 7. Red Hat Product Security has rated this issue as having a 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": "mercurial 4.9"}