What is the CVSS score of CVE-2021-36218?

CVE-2021-36218 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 1.5%.

Is there a patch available for CVE-2021-36218?

Yes, a patch is available for CVE-2021-36218. Update the affected software to the latest version immediately.

Sgxwallet CVE-2021-36218

HIGH

Out-of-bounds Write (CWE-787)

2021-09-27 cve@mitre.org

Buffer Overflow Memory Corruption Sgxwallet

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Sep 27, 2021 - 14:15 nvd

HIGH 7.5

DescriptionNVD

An issue was discovered in SKALE sgxwallet 1.58.3. sgx_disp_ippsAES_GCMEncrypt allows an out-of-bounds write, resulting in a segfault and compromised enclave. This issue describes a buffer overflow, which was resolved prior to v1.77.0 and not reproducible in latest sgxwallet v1.77.0

AnalysisAI

An issue was discovered in SKALE sgxwallet 1.58.3. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Out-of-bounds Write vulnerability could allow attackers to write data beyond allocated buffer boundaries leading to code execution or crashes.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. An issue was discovered in SKALE sgxwallet 1.58.3. sgx_disp_ippsAES_GCMEncrypt allows an out-of-bounds write, resulting in a segfault and compromised enclave. This issue describes a buffer overflow, which was resolved prior to v1.77.0 and not reproducible in latest sgxwallet v1.77.0 Affected products include: Skale Sgxwallet.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).