CVE-2026-118769

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{"bugzilla": {"description": "botan: Botan: Integer overflow when reporting block size in FFI can cause memory corruption", "id": "2563613", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563613"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-681", "details": ["A flaw was found in Botan. An attacker can exploit an unchecked integer truncation in the C programming interface by supplying untrusted algorithm parameters that specify a variable-block-size cipher. This flaw causes the application to allocate an undersized memory buffer, resulting in heap memory corruption during data processing that may lead to arbitrary code execution or a denial of service (DoS)."], "mitigation": {"lang": "en:us", "value": "Sanitize and restrict external algorithm parameter inputs using an allowlist to reject the variable-length Lion cipher when invoking Botan's C FFI interface. Alternatively, configure the application to utilize the native C++ API or standard cipher modes such as CBC or CTR instead of raw ECB mode."}, "name": "CVE-2026-118769", "package_state": [{"cpe": "cpe:/a:redhat:ansible_automation_platform:2", "fix_state": "Fix deferred", "package_name": "ansible-automation-platform-27/hub-rhel9", "product_name": "Red Hat Ansible Automation Platform 2"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "rust-podman-sequoia", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "rust-sequoia-sq", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "rust-sequoia-sqv", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "rust-sequoia-sq", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Not affected", "package_name": "rust-podman-sequoia", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-10-29T17:22:07Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-118769\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-118769\nhttps://github.com/randombit/botan/commit/c6089ab7fab616517d56c447c93e13a5c57a0af3\nhttps://github.com/randombit/botan/pull/5805\nhttps://github.com/randombit/botan/security/advisories/GHSA-c68p-822g-jfvr"], "statement": "A flaw was found in Botan's C API function botan_block_cipher_block_size(). When an application utilizing the C FFI raw ECB mode accepts untrusted external algorithm parameter strings, an attacker can specify the variable-block-size Lion cipher to trigger an unchecked integer truncation from size_t to int. This causes the application to allocate an undersized buffer, resulting in heap memory corruption during subsequent block processing.", "threat_severity": "Moderate"}

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