What’s Vulnerable › Vulnerabilities

CVE-2020-8944: Unchecked buffer overrun in ecall_restore

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-15 · updated 2026-06-17
• Weakness: CWE-120

Description

An arbitrary memory write vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to ecall_restore using the attribute output which fails to check the range of a pointer. An attacker can use this pointer to write to arbitrary memory addresses including those within the secure enclave We recommend upgrading past commit 382da2b8b09cbf928668a2445efb778f76bd9c8a

Affected products

• Google LLC Asylo: through 0.6.0

References

• https://github.com/google/asylo/commit/382da2b8b09cbf928668a2445efb778f76bd9c8a
• https://github.com/google/asylo/commit/382da2b8b09cbf928668a2445efb778f76bd9c8a

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