Description

Out-of-bounds read vulnerability in Samsung Opensource Escargot allows Overread Buffers. This issue affects Escargot: 25648aef19187b3f87f4d9420b8d761453ad4630.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "4.4",
  "pubDate": "2026-09-04T00:17:12.820Z",
  "pubdate": "2026-09-04T00:17:12.820Z",
  "executiveSummary": "An out-of-bounds (OOB) read vulnerability exists within the Samsung Opensource Escargot project. This flaw enables an attacker to trigger an overread condition in system buffers. The vulnerability is identified in commit 25648aef19187b3f87f4d9420b8d761453ad4630. This security defect poses a significant risk to the integrity and confidentiality of the affected application. By leveraging this vulnerability, an attacker may be able to read sensitive memory contents residing outside of defined buffer boundaries. Successful exploitation typically requires a specifically crafted input that induces the application to access memory addresses beyond the intended scope. This can lead to information disclosure, where internal data, cryptographic keys, or sensitive application state might be exposed to unauthorized parties. Given the nature of OOB read vulnerabilities, the potential for stability issues, such as application crashes (denial of service), is also present depending on the memory layout and the accessibility of adjacent memory regions.",
  "technicalDetails": "The vulnerability is classified as an out-of-bounds read, specifically manifesting as an overread condition within the Escargot codebase. The root cause lies in improper bounds checking performed during memory access operations. When the application processes data buffers, it fails to sufficiently validate that the read pointer remains within the allocated memory region of the buffer. Consequently, if an attacker provides a crafted input that influences the offset or size parameters utilized in these memory operations, the application can be coerced into reading data beyond the allocated buffer.\nExploitation flow typically involves the attacker manipulating the application input to define an access pattern that forces the pointer arithmetic to reference memory addresses outside the intended memory segment. Because the application logic does not implement robust boundary validation before the dereference occurs, the system proceeds to read the adjacent memory contents. This behavior can expose sensitive data residing in the process heap or stack, which could include pointers that leak the memory layout (facilitating further exploitation like ROP/JOP chains) or application-specific sensitive information.\nThe vulnerability affects Escargot version/commit 25648aef19187b3f87f4d9420b8d761453ad4630. While authentication and privilege requirements for exploitation are highly dependent on the specific implementation of the interface exposing the vulnerable code, such vulnerabilities are often reachable via input vectors that do not require high privileges if the processing logic is exposed to untrusted inputs. If the overread process encounters unmapped memory regions or memory protected by hardware-level page attributes, the application will likely trigger a segmentation fault, resulting in a denial-of-service condition. The post-exploitation impact ranges from unauthorized information disclosure to complete service disruption, depending on the data structures present in the surrounding memory space. This flaw highlights the necessity of strict validation of all user-supplied input offsets and lengths before performing memory access operations to ensure they remain within the bounds of the assigned buffer."
}