Occlum up to 0.25.x on SGX util/mem_util.rs information exposure

CVSS Meta Temp Score
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CTI Interest Score
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2.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Occlum up to 0.25.x on SGX. This affects an unknown function of the file util/mem_util.rs. Performing a manipulation results in information exposure. This vulnerability is reported as CVE-2021-44421. The attack requires a local approach. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Occlum up to 0.25.x on SGX. This affects some unknown processing of the file util/mem_util.rs. The manipulation with an unknown input leads to a information exposure vulnerability. CWE is classifying the issue as CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. This is going to have an impact on confidentiality.

The weakness was disclosed 03/11/2022 as 36918e42bf6732c4d3996bc99eb013eb6b90b249. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2021-44421 since 11/29/2021. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading to version 0.26.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 36918e42bf6732c4d3996bc99eb013eb6b90b249 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.5
VulDB Meta Temp Score: 2.4

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Information exposure
CWE: CWE-203 / CWE-200 / CWE-284
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Occlum 0.26.0
Patch: 36918e42bf6732c4d3996bc99eb013eb6b90b249

Timelineinfo

11/29/2021 🔍
03/11/2022 +102 days 🔍
03/11/2022 +0 days 🔍
03/14/2022 +3 days 🔍

Sourcesinfo

Product: github.com

Advisory: 36918e42bf6732c4d3996bc99eb013eb6b90b249
Status: Confirmed

CVE: CVE-2021-44421 (🔍)
GCVE (CVE): GCVE-0-2021-44421
GCVE (VulDB): GCVE-100-194697

Entryinfo

Created: 03/11/2022 11:05
Updated: 03/14/2022 08:11
Changes: 03/11/2022 11:05 (43), 03/14/2022 08:11 (1)
Complete: 🔍
Cache ID: 216::103

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