The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit
Published Apr 17, 2019
8.1
HIGHCVSS 3.0
EPSS 4.99%
Description
The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element values in EAP-pwd-Commit. This vulnerability may allow an attacker to complete EAP-PWD authentication without knowing the password. However, unless the crypto library does not implement additional checks for the EC point, the attacker will not be able to derive the session key or complete the key exchange. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.
Affected products
-
- Version 2.7StatusaffectedConstraints<=2.7
- Version
-
- Version 2.4StatusaffectedConstraints<=2.4
- Version
-
- Version 2.7StatusaffectedConstraints<=2.7
- Version
-
- Version 2.4StatusaffectedConstraints<=2.4
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Wi-Fi Alliance | hostapd with EAP-pwd support | n/a |
| ||||||
| Wi-Fi Alliance | hostapd with SAE support | n/a |
| ||||||
| Wi-Fi Alliance | wpa supplicant with EAP-pwd support | n/a |
| ||||||
| Wi-Fi Alliance | wpa supplicant with SAE support | n/a |
|
Configuration 1
- ≤ 2.4
- ≥ 2.5 · ≤ 2.7
- ≤ 2.4
- ≥ 2.5 · ≤ 2.7
Configuration 2
- 28
- 29
- 30
No data.
Red Hat Enterprise Linux 5
wpa_supplicant
Not affected
Red Hat Enterprise Linux 6
wpa_supplicant
Not affected
Red Hat Enterprise Linux 7
wpa_supplicant
Not affected
Red Hat Enterprise Linux 8
wpa_supplicant
Not affected
Red Hat Virtualization 4
redhat-virtualization-host
Not affected
Red Hat Virtualization 4
rhvm-appliance
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | wpa_supplicant | Not affected | n/a |
| Red Hat Enterprise Linux 6 | wpa_supplicant | Not affected | n/a |
| Red Hat Enterprise Linux 7 | wpa_supplicant | Not affected | n/a |
| Red Hat Enterprise Linux 8 | wpa_supplicant | Not affected | n/a |
| Red Hat Virtualization 4 | redhat-virtualization-host | Not affected | n/a |
| Red Hat Virtualization 4 | rhvm-appliance | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of wpa_supplicant as shipped with Red Hat Enterprise Linux 5, 6 as they did not include support for EAP-pwd. This issue did not affect the versions of wpa_supplicant as shipped with Red Hat Enterprise Linux 7 as they are not compiled with EAP-pwd enabled. In particular, the CONFIG_EAP_PWD=y option is not set at compile time.
References (16)
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html vendor-advisoryx_refsource_SUSE
- http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2019-9497 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1699164 Issue Tracking
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html mailing-listx_refsource_MLIST
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-9497
- https://seclists.org/bugtraq/2019/May/40 mailing-listx_refsource_BUGTRAQ
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc vendor-advisoryx_refsource_FREEBSD
- https://w1.fi/security/2019-4/ x_refsource_CONFIRMPatchVendor Advisory
- https://w1.fi/security/2019-4/eap-pwd-missing-commit-validation.txt
- https://www.cve.org/CVERecord?id=CVE-2019-9497
- https://www.kb.cert.org/vuls/id/871675/
- https://www.synology.com/security/advisory/Synology_SA_19_16 x_refsource_CONFIRM
Change history (0)
No recorded changes yet.