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ubuntucveUbuntu.comUB:CVE-2021-31805
HistoryApr 12, 2022 - 12:00 a.m.

CVE-2021-31805

2022-04-1200:00:00
ubuntu.com
ubuntu.com
19
apache struts
cve-2020-17530
rce

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.973

Percentile

99.9%

JSON

The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts
2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double
evaluation if a developer applied forced OGNL evaluation by using the
%{…} syntax. Using forced OGNL evaluation on untrusted user input can
lead to a Remote Code Execution and security degradation.

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CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.973

Percentile

99.9%

JSON
Related for UB:CVE-2021-31805
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