Apple macOS up to 10.15.2 Crash Reporter link following

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Apple macOS up to 10.15.2. Affected is an unknown function of the component Crash Reporter. Performing a manipulation results in link following. This vulnerability is reported as CVE-2020-3835. The attack requires a local approach. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple macOS up to 10.15.2 (Operating System). It has been classified as critical. This affects an unknown code of the component Crash Reporter. The manipulation with an unknown input leads to a link following vulnerability. CWE is classifying the issue as CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks. This issue is fixed in macOS Catalina 10.15.3. A malicious application may be able to access restricted files.

The weakness was disclosed 01/28/2020 by Csaba Fitzl as HT210919 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2020-3835. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

A validation issue existed in the handling of symlinks. This issue was addressed with improved validation of symlinks.

Upgrading to version 10.15.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries VDB-150559, VDB-150560, VDB-150561 and VDB-150562 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
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: Link following
CWE: CWE-59
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: 🔍

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

Upgrade: macOS 10.15.3

Timelineinfo

12/18/2019 🔍
01/28/2020 +41 days 🔍
01/28/2020 +0 days 🔍
02/28/2020 +31 days 🔍
04/06/2024 +1499 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT210919
Researcher: Csaba Fitzl
Status: Confirmed

CVE: CVE-2020-3835 (🔍)
GCVE (CVE): GCVE-0-2020-3835
GCVE (VulDB): GCVE-100-150567
scip Labs: https://www.scip.ch/en/?labs.20180712
See also: 🔍

Entryinfo

Created: 02/28/2020 13:20
Updated: 04/06/2024 10:17
Changes: 02/28/2020 13:20 (47), 02/28/2020 13:25 (17), 04/06/2024 10:17 (18)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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