CVE-2021-44421
Occlum Intel SGX Information Disclosure
Description
The pointer-validation logic in util/mem_util.rs in Occlum before 0.26.0 for Intel SGX acts as a confused deputy that allows a local attacker to access unauthorized information via side-channel analysis.
INFO
Published Date :
March 10, 2022, 5:44 p.m.
Last Modified :
Nov. 21, 2024, 6:30 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-44421.
| URL | Resource |
|---|---|
| https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130 | Exploit Third Party Advisory |
| https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51 | Exploit Third Party Advisory |
| https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249 | Patch Third Party Advisory |
| https://github.com/occlum/occlum/compare/0.25.0...v0.26.0 | Third Party Advisory |
| https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130 | Exploit Third Party Advisory |
| https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51 | Exploit Third Party Advisory |
| https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249 | Patch Third Party Advisory |
| https://github.com/occlum/occlum/compare/0.25.0...v0.26.0 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-44421 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-44421 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130 Added Reference https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51 Added Reference https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249 Added Reference https://github.com/occlum/occlum/compare/0.25.0...v0.26.0 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Mar. 15, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130 No Types Assigned https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L130 Exploit, Third Party Advisory Changed Reference Type https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51 No Types Assigned https://github.com/occlum/occlum/blob/821ea843ae21037e6cff5268306d2da1fb131552/src/libos/src/util/mem_util.rs#L51 Exploit, Third Party Advisory Changed Reference Type https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249 No Types Assigned https://github.com/occlum/occlum/commit/36918e42bf6732c4d3996bc99eb013eb6b90b249 Patch, Third Party Advisory Changed Reference Type https://github.com/occlum/occlum/compare/0.25.0...v0.26.0 No Types Assigned https://github.com/occlum/occlum/compare/0.25.0...v0.26.0 Third Party Advisory Added CWE NIST CWE-203 Added CPE Configuration OR *cpe:2.3:a:occlum_project:occlum:*:*:*:*:*:software_guard_extensions:*:* versions up to (excluding) 0.26.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-44421 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-44421
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} -0.04%
score
0.18970
percentile