Out-of-bounds write in wpa_supplicant - CVE-2021-0326
Published: December 29, 2021 / Updated: February 10, 2022
Vulnerability identifier: #VU59104
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-0326
CWE-ID: CWE-787
Exploitation vector: Adjecent network
Exploit availability:
Public exploit is available
Vendor: Jouni Malinen
Affected software:
wpa_supplicant
wpa_supplicant
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input within the p2p_copy_client_info() function of p2p.c in wpa_suplicant. A remote attacker pass specially crafted input to the application, trigger out-of-bounds write and execute arbitrary code on the target system.
How to mitigate CVE-2021-0326
Install update from vendor's website.
Sources
- https://source.android.com/security/bulletin/2021-02-01
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VMHPFCON6ZFCGZXSASJFKQ3UX2UIYMND/
- https://lists.debian.org/debian-lts-announce/2021/02/msg00033.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VOSA6DZUDLVOCYJNNXD6V3MRBVLCXZFH/
- https://www.debian.org/security/2021/dsa-4898