CVE-2021-27290

nodejs-ssri: Regular expression DoS (ReDoS) when parsing malicious SRI in strict mode

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

ssri 5.2.2-8.0.0, fixed in 8.0.1, processes SRIs using a regular expression which is vulnerable to a denial of service. Malicious SRIs could take an extremely long time to process, leading to denial of service. This issue only affects consumers using the strict option.

ssri versión 5.2.2-8.0.0, corregido en versión 8.0.1, procesa los SRI usando una expresión regular que es vulnerable a una denegación de servicio. Los SRI maliciosos pueden tardar mucho en procesarse, conllevando a una denegación del servicio. Este problema solo afecta a consumidores que usan la opción estricta

A flaw was found in ssri package. A malicious string provided by an attacker may lead to Regular Expression Denial of Service (ReDoS). This issue only affects consumers
using the strict option. The highest threat from this vulnerability is to availability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-02-16 CVE Reserved
2021-03-12 CVE Published
2023-11-26 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-770: Allocation of Resources Without Limits or Throttling

CAPEC

References (7)

URL	Tag	Source
https://npmjs.com	Product

URL	Date	SRC
https://doyensec.com/resources/Doyensec_Advisory_ssri_redos.pdf	2024-08-03
https://github.com/yetingli/SaveResults/blob/main/pdf/ssri-redos.pdf	2024-08-03

URL	Date	SRC
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	2022-05-13
https://www.oracle.com/security-alerts/cpuoct2021.html	2022-05-13

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2021-27290	2021-09-22
https://bugzilla.redhat.com/show_bug.cgi?id=1941471	2021-09-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ssri Project Search vendor "Ssri Project"		Ssri Search vendor "Ssri Project" for product "Ssri"				>= 5.2.2 < 6.0.2 Search vendor "Ssri Project" for product "Ssri" and version " >= 5.2.2 < 6.0.2"		node.js		Affected
Ssri Project Search vendor "Ssri Project"		Ssri Search vendor "Ssri Project" for product "Ssri"				>= 7.0.0 < 8.0.1 Search vendor "Ssri Project" for product "Ssri" and version " >= 7.0.0 < 8.0.1"		node.js		Affected
Oracle Search vendor "Oracle"		Graalvm Search vendor "Oracle" for product "Graalvm"				20.3.3 Search vendor "Oracle" for product "Graalvm" and version "20.3.3"		enterprise		Affected
Oracle Search vendor "Oracle"		Graalvm Search vendor "Oracle" for product "Graalvm"				21.2.0 Search vendor "Oracle" for product "Graalvm" and version "21.2.0"		enterprise		Affected
Siemens Search vendor "Siemens"		Sinec Infrastructure Network Services Search vendor "Siemens" for product "Sinec Infrastructure Network Services"				< 1.0.1.1 Search vendor "Siemens" for product "Sinec Infrastructure Network Services" and version " < 1.0.1.1"		-		Affected