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githubGitHub Advisory DatabaseGHSA-H7MF-QRM9-2848
HistoryMay 01, 2022 - 6:24 p.m.

OpenSymphony XWork vulnerable to improper input validation

2022-05-0118:24:47
CWE-20
GitHub Advisory Database
github.com
7
opensymphony xwork
webwork
apache struts
improper input validation
ognl expression
denial of service
execute arbitrary code
altsyntax
version 2.0.4

CVSS2

6.8

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

EPSS

0.214

Percentile

96.5%

XWork is an command-pattern framework that is used to power WebWork as well as other applications. Struts support in OpenSymphony XWork before 1.2.3, and 2.x before 2.0.4, as used in WebWork and Apache Struts, recursively evaluates all input as an Object-Graph Navigation Language (OGNL) expression when altSyntax is enabled, which allows remote attackers to cause a denial of service (infinite loop) or execute arbitrary code via form input beginning with a “%{” sequence and ending with a “}” character.

Note: Version 2.0.4 marks the change from opensymphony:xwork to com.opensymphony:xwork.

Affected configurations

Vulners
Node
opensymphonyxworkRange2.0.02.0.3
OR
opensymphonyxworkRange<1.2.3
VendorProductVersionCPE
opensymphonyxwork*cpe:2.3:a:opensymphony:xwork:*:*:*:*:*:*:*:*

CVSS2

6.8

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

EPSS

0.214

Percentile

96.5%

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