Denial of service in InspIRCd



Published: 2020-09-20
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-25269
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
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InspIRCd
Server applications / Conferencing, Collaboration and VoIP solutions

Vendor InspIRCd

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU46820

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-25269

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote user to crash the daemon.

The vulnerability exists due to a use-after-free error within the pgsql module in InspIRCd. A remote user can send specially crafted request to the daemon, trigger a use-after-free error and crash the server..

Successful exploitation of the vulnerability requires that sqlauth or sqloper modules are used.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

InspIRCd: 2.0.0 - 3.5.0

External links

http://docs.inspircd.org/security/2020-01/
http://github.com/inspircd/inspircd/compare/426d1c8...b3f1db9
http://github.com/inspircd/inspircd/compare/v2.0.28...07d7dea
http://www.debian.org/security/2020/dsa-4764


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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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