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cve[email protected]CVE-2021-27768
HistoryMay 12, 2022 - 10:15 p.m.

CVE-2021-27768

2022-05-1222:15:11
CWE-300
CWE-295
web.nvd.nist.gov
43
4
cve-2021-27768
hostname verification
mitm attack
sensitive data
android application
nvd

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

6.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

5.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.7%

Using the ability to perform a Man-in-the-Middle (MITM) attack, which indicates a lack of hostname verification, sensitive account information was able to be intercepted. In this specific scenario, the application’s network traffic was intercepted using a proxy server set up in ‘transparent’ mode while a certificate with an invalid hostname was active. The Android application was found to have hostname verification issues during the server setup and login flows; however, the application did not process requests post-login.

Affected configurations

NVD
Node
hcltechverseRange<12.0.9android
CPENameOperatorVersion
hcltech:versehcltech verselt12.0.9

CNA Affected

[
  {
    "product": "Verse for Android",
    "vendor": "HCL Software",
    "versions": [
      {
        "lessThan": "12.0.9",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

Social References

More

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

6.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

5.5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.7%

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