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{"affected_release": [{"advisory": "RHSA-2022:1894", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "rust-toolset:rhel8-8060020220125235043.eab6f2ea", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}], "bugzilla": {"description": "rust: Race condition in remove_dir_all leading to removal of files outside of the directory being removed", "id": "2041504", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2041504"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N", "status": "verified"}, "cwe": "(CWE-363|CWE-367)", "details": ["Rust is a multi-paradigm, general-purpose programming language designed for performance and safety, especially safe concurrency. The Rust Security Response WG was notified that the `std::fs::remove_dir_all` standard library function is vulnerable a race condition enabling symlink following (CWE-363). An attacker could use this security issue to trick a privileged program into deleting files and directories the attacker couldn't otherwise access or delete. Rust 1.0.0 through Rust 1.58.0 is affected by this vulnerability with 1.58.1 containing a patch. Note that the following build targets don't have usable APIs to properly mitigate the attack, and are thus still vulnerable even with a patched toolchain: macOS before version 10.10 (Yosemite) and REDOX. We recommend everyone to update to Rust 1.58.1 as soon as possible, especially people developing programs expected to run in privileged contexts (including system daemons and setuid binaries), as those have the highest risk of being affected by this. Note that adding checks in your codebase before calling remove_dir_all will not mitigate the vulnerability, as they would also be vulnerable to race conditions like remove_dir_all itself. The existing mitigation is working as intended outside of race conditions.", "A race condition flaw was found in Rust's std::fs::remove_dir_all function. Rust applications that use this function may be vulnerable to a race condition where an unprivileged attacker can trick the application into deleting files and directories, causing an impact on system data integrity. If the application is privileged, an attacker can possibly delete files they would not usually have access to."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2022-21658", "package_state": [{"cpe": "cpe:/a:redhat:devtools:", "fix_state": "Affected", "package_name": "rust-toolset-1.54-rust", "product_name": "Red Hat Developer Tools"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "stratisd", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Will not fix", "package_name": "stratisd", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "kata-containers", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2022-01-20T11:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-21658\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-21658\nhttps://github.com/rust-lang/rust/security/advisories/GHSA-r9cc-f5pr-p3j2"], "statement": "This flaw has been given a Severity of Moderate because it is not exploitable at will on every Rust program as it requires a specific scenario where a privileged program uses a specific Rust stdlib function, the attacker has some knowledge of the program's file operations, and has the normal limitations and challenges of a \nTime-of-check to time-of-use (TOCTOU). It must also be carried out by an unprivileged attacker.", "threat_severity": "Moderate", "upstream_fix": "rust 1.58.1"}