Denial of service in LiteSpeed QUIC



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-30592
CWE-ID CWE-476
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 LiteSpeed QUIC
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor LiteSpeed Technologies

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU66731

Risk: Medium

CVSSv4.0: 7.7 [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:P/U:Green]

CVE-ID: CVE-2022-30592

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: Yes

Description

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

The vulnerability exists due to a NULL pointer dereference error within liblsquic/lsquic_qenc_hdl.c when handling HTTP/3 requests. A remote attacker can send multiple requests to the server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

LiteSpeed QUIC: 1.0 - 3.0.4

CPE2.3 External links

https://github.com/litespeedtech/lsquic/commit/a74702c630e108125e71898398737baec8f02238#diff-73a138506faffe5f1efa8586346ab573c88e9dd2097774ecca5949a718a57cae
https://github.com/litespeedtech/lsquic/releases/tag/v3.1.0


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



###SIDEBAR###