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AtlassianCVE-2019-20104

HistoryFeb 06, 2020 - 3:15 a.m.

CVE-2019-20104

2020-02-0603:15:10

CWE-776

atlassian

web.nvd.nist.gov

100

atlassian

crowd

openid

dos

xml entity expansion

vulnerability

cve-2019-20104

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.6

Confidence

High

EPSS

0.002

Percentile

60.0%

JSON

The OpenID client application in Atlassian Crowd before version 3.6.2, and from version 3.7.0 before 3.7.1 allows remote attackers to perform a Denial of Service attack via an XML Entity Expansion vulnerability.

Affected configurations

Nvd

Node

atlassiancrowdRange<3.2.11

atlassiancrowdRange3.3.0–3.3.8

atlassiancrowdRange3.4.0–3.4.7

atlassiancrowdRange3.5.0–3.5.2

atlassiancrowdRange3.6.0–3.6.2

atlassiancrowdRange3.6.3–3.7.1

atlassiancrowdRange3.7.2–4.0.0

VendorProductVersionCPE
atlassiancrowd*cpe:2.3:a:atlassian:crowd:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
atlassian	crowd	*	cpe:2.3:a:atlassian:crowd::::::::

CNA Affected

[
  {
    "product": "Crowd",
    "vendor": "Atlassian",
    "versions": [
      {
        "lessThan": "3.6.2",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      },
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "3.7.0",
        "versionType": "custom"
      },
      {
        "lessThan": "3.7.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

jira.atlassian.com/browse/CWD-5526

zeroauth.ltd/blog/2020/02/07/cve-2019-20104-atlassian-crowd-openid-client-vulnerable-to-remote-dos-via-xml-entity-expansion/

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.6

Confidence

High

EPSS

0.002

Percentile

60.0%

JSON

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