#VU83913 Integer underflow in gpsd - CVE-2023-43628

Vulnerability identifier: #VU83913

Vulnerability risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2023-43628

CWE-ID: CWE-191

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
gpsd
Client/Desktop applications / Other client software

Vendor: Eric S. Raymond

Description

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

The vulnerability exists due to integer underflow in the NTRIP Stream Parsing functionality. A remote attacker can send a specially crafted request to the affected application, trigger integer underflow and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

gpsd: 3.25.1

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External links
https://talosintelligence.com/vulnerability_reports/TALOS-2023-1860

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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. However, proof of concept for this vulnerability is available.