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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

An issue was discovered in mouse07410 asn1c thru 0.9.29 (2025-03-20) - a fork of vlm asn1c. In UPER (Unaligned Packed Encoding Rules), asn1c-generated decoders fail to enforce INTEGER constraints when the bound is positive and exceeds 32 bits in length, potentially allowing incorrect or malicious input to be processed.

CVE-2025-55398 is a critical vulnerability identified in the mouse07410 asn1c parser, a fork of the vlm asn1c ASN.1 compiler, specifically affecting versions up to 0.9.29 as of March 2025. The vulnerability arises in the handling of Unaligned Packed Encoding Rules (UPER) encoded data, where the asn1c-generated decoders fail to properly enforce INTEGER constraints when the integer bounds are positive and exceed 32 bits in length. ASN.1 (Abstract Syntax Notation One) is widely used for defining data structures in telecommunications and network protocols, and UPER is a compact encoding rule for ASN.1 data. The failure to enforce these constraints means that malformed or maliciously crafted input data can bypass validation checks, potentially leading to incorrect processing of data. This can result in severe consequences such as memory corruption, buffer overflows, or logic errors, which attackers could exploit to execute arbitrary code, cause denial of service, or compromise data integrity and confidentiality. The vulnerability has a CVSS v3.1 score of 9.8, indicating critical severity with network attack vector, no required privileges or user interaction, and impacts on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the nature of the flaw and the critical score suggest a high risk of exploitation once exploit code becomes available. The vulnerability is classified under CWE-1284, which relates to improper enforcement of constraints in data processing components. No official patches or fixes have been linked yet, emphasizing the need for immediate attention from users of the affected software.

Detailed information about CVE-2025-55398: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2025-55398: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-55398: n/a

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