Apple iOS/iPadOS up to 13.3.1 libxml2 buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.2$5k-$25k0.00

Summaryinfo

A vulnerability classified as critical was found in Apple iOS and iPadOS up to 13.3.1. This affects an unknown part of the component libxml2. Executing a manipulation can lead to buffer overflow. This vulnerability is tracked as CVE-2020-3909. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in Apple iOS and iPadOS up to 13.3.1 (Smartphone Operating System) and classified as critical. This vulnerability affects an unknown function of the component libxml2. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 03/24/2020 as HT211102 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2020-3909. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/02/2020). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A buffer overflow was addressed with improved bounds checking.

Upgrading to version 13.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries VDB-152505, VDB-152520, VDB-152542 and VDB-152561 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: iOS/iPadOS 13.4

Timelineinfo

12/18/2019 🔍
03/24/2020 +97 days 🔍
03/24/2020 +0 days 🔍
04/02/2020 +9 days 🔍
10/06/2020 +187 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT211102
Status: Confirmed

CVE: CVE-2020-3909 (🔍)
GCVE (CVE): GCVE-0-2020-3909
GCVE (VulDB): GCVE-100-152572
scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 04/02/2020 11:46
Updated: 10/06/2020 13:18
Changes: 04/02/2020 11:46 (46), 04/02/2020 11:51 (16), 10/06/2020 13:18 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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