#VU96669 Double free in libpcap - CVE-2023-7256

Vulnerability identifier: #VU96669

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-7256

CWE-ID: CWE-415

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
libpcap
Universal components / Libraries / Libraries used by multiple products

Vendor: Tcpdump.org

Description

The vulnerability allows a local user to crash the application.

The vulnerability exists due to a boundary error when configure for emote packet capture. A local user can trigger a double free error and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libpcap: 1.0.0 - 1.10.4

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External links
https://github.com/the-tcpdump-group/libpcap/commit/262e4f34979872d822ccedf9f318ed89c4d31c03
https://github.com/the-tcpdump-group/libpcap/commit/2aa69b04d8173b18a0e3492e0c8f2f7fabdf642d

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.