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cve[email protected]CVE-2021-25094
HistoryApr 25, 2022 - 4:16 p.m.

CVE-2021-25094

2022-04-2516:16:07
CWE-306
web.nvd.nist.gov
61
In Wild
4
cve-2021-25094
tatsu
wordpress
plugin
unauthenticated upload
zip extraction
race condition

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.1 High

AI Score

Confidence

High

0.122 Low

EPSS

Percentile

95.4%

The Tatsu WordPress plugin before 3.3.12 add_custom_font action can be used without prior authentication to upload a rogue zip file which is uncompressed under the WordPress’s upload directory. By adding a PHP shell with a filename starting with a dot “.”, this can bypass extension control implemented in the plugin. Moreover, there is a race condition in the zip extraction process which makes the shell file live long enough on the filesystem to be callable by an attacker.

Affected configurations

Vulners
NVD
Node
brandexponentstatsuRange<3.3.12
VendorProductVersionCPE
brandexponentstatsu*cpe:2.3:a:brandexponents:tatsu:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "Tatsu",
    "vendor": "Unknown",
    "versions": [
      {
        "lessThan": "3.3.12",
        "status": "affected",
        "version": "3.3.12",
        "versionType": "custom"
      }
    ]
  }
]

Social References

More

6.8 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.1 High

AI Score

Confidence

High

0.122 Low

EPSS

Percentile

95.4%