Apple iOS/iPadOS up to 14.1 libxml2 integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$5k-$25k0.00

Summaryinfo

A vulnerability described as critical has been identified in Apple iOS and iPadOS up to 14.1. This affects an unknown part of the component libxml2. Executing a manipulation can lead to integer overflow. This vulnerability is handled as CVE-2020-27911. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in Apple iOS and iPadOS up to 14.1 (Smartphone Operating System). This vulnerability affects an unknown code block of the component libxml2. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 11/05/2020 by OSS-Fuzz as HT211929 as confirmed advisory (Website). The advisory is available at support.apple.com. This vulnerability was named CVE-2020-27911. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 11/06/2020). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

A remote attacker may be able to cause unexpected application termination or arbitrary code execution

Upgrading to version 14.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An integer overflow was addressed through improved input validation.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

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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: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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 14.2

Timelineinfo

10/27/2020 🔍
11/05/2020 +9 days 🔍
11/05/2020 +0 days 🔍
11/06/2020 +1 days 🔍
12/02/2020 +26 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT211929
Researcher: OSS-Fuzz
Status: Confirmed

CVE: CVE-2020-27911 (🔍)
GCVE (CVE): GCVE-0-2020-27911
GCVE (VulDB): GCVE-100-164386
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 11/06/2020 08:36
Updated: 12/02/2020 20:34
Changes: 11/06/2020 08:36 (1), 11/06/2020 08:37 (17), 11/06/2020 08:40 (29), 12/02/2020 20:34 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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