Life Before Us Yo App 2.5.8 on iOS X.509 Certificate Validation certificate validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Life Before Us Yo App 2.5.8 on iOS. This vulnerability affects unknown code of the component X.509 Certificate Validation. Performing a manipulation results in certificate validation. This vulnerability is reported as CVE-2017-8937. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Life Before Us Yo App 2.5.8 on iOS (iOS App Software). It has been classified as critical. This affects some unknown processing of the component X.509 Certificate Validation. The manipulation with an unknown input leads to a certificate validation vulnerability. CWE is classifying the issue as CWE-295. The product does not validate, or incorrectly validates, a certificate. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Life Before Us Yo app 2.5.8 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.

The bug was discovered 05/05/2017. The weakness was disclosed 05/15/2017 (Website). It is possible to read the advisory at medium.com. This vulnerability is uniquely identified as CVE-2017-8937 since 05/15/2017. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-100866, VDB-100867, VDB-100868 and VDB-100869 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
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: Certificate validation
CWE: CWE-295 / CWE-287
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/05/2017 🔍
05/15/2017 +10 days 🔍
05/15/2017 +0 days 🔍
05/15/2017 +0 days 🔍
05/16/2017 +1 days 🔍
09/26/2020 +1229 days 🔍

Sourcesinfo

Advisory: medium.com
Status: Not defined

CVE: CVE-2017-8937 (🔍)
GCVE (CVE): GCVE-0-2017-8937
GCVE (VulDB): GCVE-100-101247
OSVDB: - CVE-2017-8937 - Life Before Us - Yo. - Medium

See also: 🔍

Entryinfo

Created: 05/16/2017 03:58
Updated: 09/26/2020 20:36
Changes: 05/16/2017 03:58 (59), 09/26/2020 20:36 (2)
Complete: 🔍
Cache ID: 216::103

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