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Regular expression denial of service in apache tika

Moderate severity GitHub Reviewed Published May 17, 2022 to the GitHub Advisory Database • Updated Aug 24, 2023

Package

maven org.apache.tika:tika (Maven)

Affected versions

>= 2.0.0, < 2.4.0
>= 1.17, < 1.28.2

Patched versions

2.4.0
1.28.2

Description

In Apache Tika, a regular expression in our StandardsText class, used by the StandardsExtractingContentHandler could lead to a denial of service caused by backtracking on a specially crafted file. This only affects users who are running the StandardsExtractingContentHandler, which is a non-standard handler.

This was originally fixed in 1.28.2 and 2.4.0. While the fix in version 2.4.0 was complete, the fix for the 1.x branch wasn't incorporated until version 1.28.3. Please see GHSA-qw3f-w4pf-jh5f for more information.

References

Published by the National Vulnerability Database May 16, 2022
Published to the GitHub Advisory Database May 17, 2022
Reviewed May 25, 2022
Last updated Aug 24, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS score

0.163%
(53rd percentile)

Weaknesses

CVE ID

CVE-2022-30126

GHSA ID

GHSA-rpjm-422r-95mh

Source code

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