#VU48695 Out-of-bounds read in libslirp - CVE-2020-29129
Published: November 26, 2020 / Updated: June 22, 2021
Vulnerability identifier: #VU48695
Vulnerability risk: Medium
CVSSv4.0: 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-2020-29129
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
libslirp
libslirp
Software vendor:
Freedesktop.org
Freedesktop.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to buffer over-read in ncsi.c when processing ARP/NCSI packets in 'arp_input' or 'ncsi_input' routines, because the libslirp library tries to read a certain amount of header data even if that exceeds the total packet length. A remote attacker can perform a denial of service attack.
Remediation
Install update from vendor's website.