CVE-2021-29061 : A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in V

A Regular Expression Denial of Service (ReDOS) vulnerability was discovered in Vfsjfilechooser2 version 0.2.9 and below which occurs when the application attempts to validate crafted URIs.

Published 2021-06-21 20:15:09

Updated 2021-06-25 01:49:41

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2021-29061

Vfsjfilechooser2 Project » Vfsjfilechooser2
Versions up to, including, (<=) 0.2.9
cpe:2.3:a:vfsjfilechooser2_project:vfsjfilechooser2:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-29061

EPSS FAQ

1.52%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 80 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-29061

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2021-29061

CWE-770 Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-29061

https://github.com/yetingli/SaveResults/blob/main/md/vfsjfilechooser2.md

SaveResults/vfsjfilechooser2.md at main · yetingli/SaveResults · GitHub
Exploit;Patch;Third Party Advisory
https://github.com/fracpete/vfsjfilechooser2/issues/7

Vulnerable Regular Expression in vfsjfilechooser2 · Issue #7 · fracpete/vfsjfilechooser2 · GitHub
Exploit;Issue Tracking;Third Party Advisory
https://github.com/fracpete/vfsjfilechooser2/releases/tag/vfsjfilechooser2-0.2.9

Release Release v0.2.9 · fracpete/vfsjfilechooser2 · GitHub
Release Notes;Third Party Advisory
https://github.com/fracpete/vfsjfilechooser2/commit/9c9f2c317f3de5ece60a3ae28c371e9796e3909b

incorporated Yeting Li's fix for Potential Regex Denial of Service (R… · fracpete/vfsjfilechooser2@9c9f2c3 · GitHub
Patch;Third Party Advisory
https://github.com/yetingli/PoCs/blob/main/CVE-2021-29061/Vfsjfilechooser2.md

PoCs/Vfsjfilechooser2.md at main · yetingli/PoCs · GitHub
Exploit;Patch;Third Party Advisory

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Vulnerability Details : CVE-2021-29061

Products affected by CVE-2021-29061

Exploit prediction scoring system (EPSS) score for CVE-2021-29061

CVSS scores for CVE-2021-29061

CWE ids for CVE-2021-29061

References for CVE-2021-29061