Microsoft Azure Linux Guest Agent Swap File information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Microsoft Azure Linux Guest Agent. This impacts an unknown function of the component Swap File Handler. Such manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2019-0804. The attack can be launched remotely. No exploit exists. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Azure Linux Guest Agent (Cloud Software) (affected version not known) and classified as problematic. Affected by this issue is some unknown functionality of the component Swap File Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

An information disclosure vulnerability exists in the way Azure WaLinuxAgent creates swap files on resource disks, aka 'Azure Linux Agent Information Disclosure Vulnerability'.

The bug was discovered 03/22/2019. The weakness was disclosed 03/14/2019 as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2019-0804 since 11/26/2018. The exploitation is known to be easy. The attack may be launched remotely. A simple authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project. The advisory points out:

An information disclosure vulnerability exists in the way Azure WaLinuxAgent creates swap files on resource disks. An authenticated attacker who successfully exploited this vulnerability could view data in swap that is normally hidden.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 237303 (Red Hat Update for WALinuxAgent (RHSA-2019:1527)).

Applying a patch is able to eliminate this problem. It is possible to mitigate the problem by applying the configuration setting sudo chmod 600 /mnt/resource/swapfile. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Config: sudo chmod 600 /mnt/resource/swapfile

Timelineinfo

11/26/2018 🔍
03/14/2019 +108 days 🔍
03/14/2019 +0 days 🔍
03/22/2019 +8 days 🔍
04/09/2019 +18 days 🔍
08/27/2023 +1601 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: RHSA-2019:1527
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2019-0804 (🔍)
GCVE (CVE): GCVE-0-2019-0804
GCVE (VulDB): GCVE-100-133142

Entryinfo

Created: 04/09/2019 09:20
Updated: 08/27/2023 14:38
Changes: 04/09/2019 09:20 (63), 05/27/2020 15:46 (2), 08/27/2023 14:38 (4)
Complete: 🔍
Cache ID: 216::103

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