Evernote 5.5.0 on Android Backup com.evernote_preferences.xml improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Evernote 5.5.0 on Android. Affected is an unknown function of the file com.evernote_preferences.xml of the component Backup Handler. Performing a manipulation results in improper authentication. This vulnerability is known as CVE-2013-5112. Furthermore, an exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Evernote 5.5.0 on Android (Android App Software). This affects an unknown code of the file com.evernote_preferences.xml of the component Backup Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, and integrity. The advisory summarizes:

The ADB backup functionality requires an Android device running the Ice-Cream Sandwich version of Android (4.x) or above.

The bug was discovered 05/01/2013. The weakness was published 12/07/2013 by Chris John Riley as confirmed blog post (Blog). The advisory is shared at blog.c22.cc. The public release has been coordinated with the project team. The blog post contains:

Effected versions of Evernote on the Android platform allow for users with limited access via the ADB (Android Debug Bridge) interface of an Android device (USB debugging enabled, no root access required) to perform backup and restore of applications and application data.
This vulnerability is uniquely identified as CVE-2013-5112 since 08/13/2013. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 208 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:com.evernote_preferences.xml it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 5.5.1 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (100936†). Similar entry is available at VDB-11506. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.8

VulDB Base Score: 7.7
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Google Hack: 🔍

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: 🔍
Exploit Delay Time: 🔍

Upgrade: Evernote 5.5.1

Timelineinfo

05/01/2013 🔍
08/13/2013 +104 days 🔍
08/13/2013 +0 days 🔍
11/25/2013 +104 days 🔍
12/07/2013 +12 days 🔍
12/07/2013 +0 days 🔍
12/16/2013 +9 days 🔍
06/04/2021 +2727 days 🔍

Sourcesinfo

Advisory: blog.c22.cc
Researcher: Chris John Riley
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-5112 (🔍)
GCVE (CVE): GCVE-0-2013-5112
GCVE (VulDB): GCVE-100-11505
X-Force: 89735
OSVDB: 100936

scip Labs: https://www.scip.ch/en/?labs.20130704
See also: 🔍

Entryinfo

Created: 12/16/2013 10:44
Updated: 06/04/2021 10:47
Changes: 12/16/2013 10:44 (57), 03/23/2019 23:23 (3), 06/04/2021 10:40 (3), 06/04/2021 10:47 (18)
Complete: 🔍
Committer: olku
Cache ID: 216:FC3:103

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

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