Denial of service in Logback

1) Deserialization of Untrusted Data

EUVDB-ID: #VU85618

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-2023-6378

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

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

The vulnerability exists due to insecure input validation when processing serialized data in logback receiver component. A remote attacker can pass specially crafted data to the application and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Logback: 1.3.0 alpha0 - 1.4.13

CPE2.3

• cpe:2.3:a:qos.ch:logback:1.3.0:alpha0:*:*:*:*:*:*
• cpe:2.3:a:qos.ch:logback:1.3.0:beta0:*:*:*:*:*:*
• cpe:2.3:a:qos.ch:logback:1.3.0:alpha1:*:*:*:*:*:*

External links

https://logback.qos.ch/news.html#1.3.12

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.