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{"bugzilla": {"description": "libtiff: heap-buffer overflow via extractContigSamplesBytes() at /libtiff/tools/tiffcrop.c", "id": "2215209", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2215209"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-119", "details": ["libtiff 4.5.0 is vulnerable to Buffer Overflow via extractContigSamplesBytes() at /libtiff/tools/tiffcrop.c:3215.", "A heap-based buffer overflow vulnerability was found in LibTIFF's tiffcrop utility in the extractContigSamplesBytes() function. This flaw allows an attacker to pass a crafted TIFF image file to the tiffcrop utility, which causes an out-of-bounds read access resulting in an application crash, eventually leading to a denial of service."], "name": "CVE-2023-25434", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "libtiff", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "compat-libtiff3", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "libtiff", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "compat-libtiff3", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Will not fix", "package_name": "libtiff", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "libtiff", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2023-06-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2023-25434\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-25434"], "statement": "This vulnerability in tiffcrop is classified as moderate severity rather than important because, while it leads to a denial of service (DoS) via a crash, the impact is not critical in terms of system compromise or data loss. The vulnerability, caused by a heap-based buffer overflow, results in an out-of-bounds read, which disrupts the functionality of the tiffcrop utility but does not allow an attacker to execute arbitrary code or escalate privileges. Additionally, exploitation requires the attacker to provide a specially crafted TIFF file, meaning it is not easily triggered remotely without user interaction. While it poses a disruption to operations, it does not lead to broader system vulnerabilities or compromise, justifying its classification as moderate severity.\nWithin regulated environments, a combination of the following controls acts as a significant barrier to successfully exploiting a CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability and therefore downgrades the severity of this particular CVE from Moderate to Low.\nSecure baseline configurations provide a strong foundation for maintaining a secure and resilient environment. Rigorous testing and development practices (SAST, DAST, etc.) identify and address memory vulnerabilities before they are promoted to Red Hat production platforms, and the malicious code protection used further mitigates impacts by detecting, blocking, and responding to exploitation attempts. The platform uses OS versions that inherit certain security tools and features from RHEL that are enabled by default, such as SELinux and Address Space Layout Randomization (ASLR). Least functionality and process isolation minimizes the attack surface by disabling unauthorized services and ports and containing any corruption within the originating process, preventing it from affecting other processes or the system as a whole.", "threat_severity": "Moderate"}