CVE-2021-27290

Public Exploit

Description

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.

7.5

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 2.67% Top 15%

Third-Party Advisory siemens.com Third-Party Advisory doyensec.com Third-Party Advisory github.com Third-Party Advisory oracle.com

Affected: n/a n/a

References

Link	Tags
https://npmjs.com	product
https://www.oracle.com/security-alerts/cpuoct2021.html	third party advisory patch
https://doyensec.com/resources/Doyensec_Advisory_ssri_redos.pdf	exploit third party advisory patch
https://github.com/yetingli/SaveResults/blob/main/pdf/ssri-redos.pdf	third party advisory exploit
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-27290?: CVE-2021-27290 has been scored as a high severity vulnerability.
How to fix CVE-2021-27290?: To fix CVE-2021-27290, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-27290 being actively exploited in the wild?: It is possible that CVE-2021-27290 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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