Regular Expression Denial of Service (ReDoS) in ssri
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-27290 |
| CWE-ID | CWE-185 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Node.js ssri Client/Desktop applications / Software for system administration |
| Vendor | Node.js Foundation |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Incorrect Regular Expression
EUVDB-ID: #VU52194
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-27290
CWE-ID:
CWE-185 - Incorrect Regular Expression
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect processing of SRIs. A remote attacker can pass specially crafted input to the application and perform regular expression denial of service (ReDoS) attack.
Install update from vendor's website.
Vulnerable software versionsNode.js ssri: 5.2.2 - 8.0.0
External linkshttp://doyensec.com/resources/Doyensec_Advisory_ssri_redos.pdf
http://github.com/yetingli/SaveResults/blob/main/pdf/ssri-redos.pdf
http://npmjs.com
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
