Google Android dm-android-verity.c android_verity_ctr privileges management

Summaryinfo

A vulnerability was found in Google Android. It has been classified as critical. Affected by this issue is the function android_verity_ctr of the file dm-android-verity.c. Performing a manipulation results in privileges management. This vulnerability was named CVE-2020-0259. The attack needs to be approached locally. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical has been found in Google Android (Smartphone Operating System) (unknown version). This affects the function android_verity_ctr of the file dm-android-verity.c. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In android_verity_ctr of dm-android-verity.c, there is a possible way to modify a dm-verity protected filesystem due to improperly used crypto. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-157941353References: N/A

The weakness was presented 08/11/2020 (Website). The advisory is shared at source.android.com. This vulnerability is uniquely identified as CVE-2020-0259 since 10/17/2019. An attack has to be approached locally. The requirement for exploitation is a authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/12/2020). It is expected to see the exploit prices for this product increasing in the near future.MITRE ATT&CK project uses the attack technique T1068 for this issue.

Applying a patch is able to eliminate this problem.

See VDB-159615, VDB-159616, VDB-159617 and VDB-159618 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Smartphone Operating System

Vendor

• Google

Name

• Android

License

• free

Website

• Vendor: https://www.google.com/

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion