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JpcertCVE-2021-20811

HistoryAug 26, 2021 - 2:15 a.m.

CVE-2021-20811

2021-08-2602:15:11

CWE-79

jpcert

web.nvd.nist.gov

cve-2021-20811

cross-site scripting

movable type

remote code injection

security vulnerability

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.001

Percentile

47.6%

JSON

Cross-site scripting vulnerability in List of Assets screen of Movable Type (Movable Type 7 r.4903 and earlier (Movable Type 7 Series), Movable Type 6.8.0 and earlier (Movable Type 6 Series), Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.44 and earlier, and Movable Type Premium Advanced 1.44 and earlier) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

Affected configurations

Nvd

Node

sixapartmovable_typeRange≤1.44premium

sixapartmovable_typeRange≤1.44premium_advanced

sixapartmovable_typeRange6.0–6.8.0-

sixapartmovable_typeRange7.0–7.8.0-

sixapartmovable_typeRange7.0–7.8.0advanced

VendorProductVersionCPE
sixapartmovable_type*cpe:2.3:a:sixapart:movable_type:*:*:*:*:premium:*:*:*
sixapartmovable_type*cpe:2.3:a:sixapart:movable_type:*:*:*:*:premium_advanced:*:*:*
sixapartmovable_type*cpe:2.3:a:sixapart:movable_type:*:*:*:*:-:*:*:*
sixapartmovable_type*cpe:2.3:a:sixapart:movable_type:*:*:*:*:advanced:*:*:*

Vendor	Product	Version	CPE
sixapart	movable_type	*	cpe:2.3:a:sixapart:movable_type:::::premium:::*
sixapart	movable_type	*	cpe:2.3:a:sixapart:movable_type:::::premium_advanced:::*
sixapart	movable_type	*	cpe:2.3:a:sixapart:movable_type:::::-:::*
sixapart	movable_type	*	cpe:2.3:a:sixapart:movable_type:::::advanced:::*

CNA Affected

[
  {
    "product": "Movable Type",
    "vendor": "Six Apart Ltd.",
    "versions": [
      {
        "status": "affected",
        "version": "Movable Type 7 r.4903 and earlier (Movable Type 7 Series), Movable Type 6.8.0 and earlier (Movable Type 6 Series), Movable Type Advanced 7 r.4903 and earlier (Movable Type Advanced 7 Series), Movable Type Premium 1.44 and earlier, and Movable Type Premium Advanced 1.44 and earlier"
      }
    ]
  }
]

References

jvn.jp/en/jp/JVN97545738/index.html

movabletype.org/news/2021/08/mt-780-681-released.html

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.001

Percentile

47.6%

JSON

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