CVE-2023-7256

2024-09-0300:00:00

ubuntu.com

libpcap

remote packet capture

function issue

memory block

apple

cve-2023-7256

cve-2023-40400

unix

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

6.9

Confidence

Low

JSON

In affected libpcap versions during the setup of a remote packet capture
the internal function sock_initaddress() calls getaddrinfo() and possibly
freeaddrinfo(), but does not clearly indicate to the caller function
whether freeaddrinfo() still remains to be called after the function
returns. This makes it possible in some scenarios that both the function
and its caller call freeaddrinfo() for the same allocated memory block. A
similar problem was reported in Apple libpcap, to which Apple assigned
CVE-2023-40400.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlibpcap< anyUNKNOWN
ubuntu20.04noarchlibpcap< anyUNKNOWN
ubuntu22.04noarchlibpcap< anyUNKNOWN
ubuntu24.04noarchlibpcap< anyUNKNOWN
ubuntu14.04noarchlibpcap< anyUNKNOWN
ubuntu16.04noarchlibpcap< anyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	libpcap	< any	UNKNOWN
ubuntu	20.04	noarch	libpcap	< any	UNKNOWN
ubuntu	22.04	noarch	libpcap	< any	UNKNOWN
ubuntu	24.04	noarch	libpcap	< any	UNKNOWN
ubuntu	14.04	noarch	libpcap	< any	UNKNOWN
ubuntu	16.04	noarch	libpcap	< any	UNKNOWN