Denial of service in re2c



| Updated: 2020-07-26
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-21232
CWE-ID CWE-674
Exploitation vector Network
Public exploit N/A
Vulnerable software
 re2c
Other software / Other software solutions

Vendor www.re2c.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Uncontrolled Recursion

EUVDB-ID: #VU31884

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-21232

CWE-ID: CWE-674 - Uncontrolled Recursion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to uncontrolled recursion that causes stack consumption in find_fixed_tags.A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

re2c: 1.0 - 1.3

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2020/05/14/4
https://github.com/skvadrik/re2c/issues/219
https://www.openwall.com/lists/oss-security/2020/04/27/2


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.



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