Vulnerability Details : CVE-2021-27803
A vulnerability was discovered in how p2p/p2p_pd.c in wpa_supplicant before 2.10 processes P2P (Wi-Fi Direct) provision discovery requests. It could result in denial of service or other impact (potentially execution of arbitrary code), for an attacker within radio range.
Vulnerability category: Denial of service
Products affected by CVE-2021-27803
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-27803
0.31%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-27803
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.4
|
MEDIUM | AV:A/AC:M/Au:N/C:P/I:P/A:P |
5.5
|
6.4
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
NIST |
References for CVE-2021-27803
-
https://w1.fi/security/2021-1/wpa_supplicant-p2p-provision-discovery-processing-vulnerability.txt
Mitigation;Vendor Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SEHS2CFGH3KCSNPHBHNGN5SGV6QPMLZ4/
[SECURITY] Fedora 34 Update: wpa_supplicant-2.9-12.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://w1.fi/security/2021-1/0001-P2P-Fix-a-corner-case-in-peer-addition-based-on-PD-R.patch
Patch;Vendor Advisory
-
https://lists.debian.org/debian-lts-announce/2021/03/msg00003.html
[SECURITY] [DLA 2581-1] wpa security updateMailing List;Third Party Advisory
-
https://www.openwall.com/lists/oss-security/2021/02/25/3
oss-security - wpa_supplicant P2P provision discovery processing vulnerabilityMailing List;Mitigation;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2021/02/27/1
oss-security - Re: wpa_supplicant P2P provision discovery processing vulnerabilityMailing List;Mitigation;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KOGP2VIVVXXQ6CZ2HU4DKGPDB4WR24XF/
[SECURITY] Fedora 33 Update: wpa_supplicant-2.9-8.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IZGUR5XFHATVXTRAEJMODS7ROYHA56NX/
[SECURITY] Fedora 32 Update: wpa_supplicant-2.9-6.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://www.debian.org/security/2021/dsa-4898
Debian -- Security Information -- DSA-4898-1 wpaThird Party Advisory
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