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cve[email protected]CVE-2018-16495
HistoryMay 26, 2021 - 7:15 p.m.

CVE-2018-16495

2021-05-2619:15:08
CWE-384
web.nvd.nist.gov
19
4
vos
user session
authentication token
cve-2018-16495
security vulnerability

6.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

42.9%

In VOS user session identifier (authentication token) is issued to the browser prior to authentication but is not changed after the user successfully logs into the application. Failing to issue a new session ID following a successful login introduces the possibility for an attacker to set up a trap session on the device the victim is likely to login with.

Affected configurations

NVD
Node
versa-networksversa_operating_systemRange<16.1r2s11
OR
versa-networksversa_operating_systemRange20.2.020.2.2
OR
versa-networksversa_operating_systemRange21.1.021.1.1

CNA Affected

[
  {
    "product": "Versa VOS",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1"
      }
    ]
  }
]

Social References

More

6.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

42.9%

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