PT-2021-7258 · Skale · Skale Sgxwallet

Published 2021-09-27 · Updated 2021-10-02 · CVE-2021-36218

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions SKALE sgxwallet versions 1.58.3 through 1.76.x

Description The issue is related to the sgx disp ippsAES GCMEncrypt function, which allows an out-of-bounds write, resulting in a segfault and compromised enclave. This is a buffer overflow issue. The estimated number of potentially affected devices is not provided. There is no information about real-world incidents where this issue was exploited. The sgx disp ippsAES GCMEncrypt function is vulnerable to a buffer overflow, which can be exploited by a remote attacker to cause a denial of service.

Recommendations For SKALE sgxwallet versions 1.58.3 through 1.76.x, update to version 1.77.0 or later to resolve the issue. As a temporary workaround, consider disabling the sgx disp ippsAES GCMEncrypt function until a patch is available.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2022-04447

CVE-2021-36218

Affected Products

Skale Sgxwallet

References · 7

• https://github.com/skalenetwork/sgxwallet/commit/77425c862ad20cd270d42c54f3d63e1eb4e02195 · Patch
• https://bdu.fstec.ru/vul/2022-04447 · Security Note
• https://osv.dev/vulnerability/CVE-2021-36218 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36218 · Security Note
• https://github.com/skalenetwork/sgxwallet/releases · Note
• https://t.me/cvenotify/21506 · Telegram Post
• https://t.me/cibsecurity/29473 · Telegram Post