Input validation error in SUSE products - CVE-2015-4146
Published: June 15, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40715
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2015-4146
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Jouni Malinen
SUSE
SUSE
Affected software:
wpa_supplicant
hostapd
Opensuse
wpa_supplicant
hostapd
Opensuse
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The EAP-pwd peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not clear the L (Length) and M (More) flags before determining if a response should be fragmented, which allows remote attackers to cause a denial of service (crash) via a crafted message.
How to mitigate CVE-2015-4146
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html
- http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch
- http://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt
- http://www.debian.org/security/2015/dsa-3397
- http://www.openwall.com/lists/oss-security/2015/05/09/6
- http://www.openwall.com/lists/oss-security/2015/05/31/6
- http://www.ubuntu.com/usn/USN-2650-1
- https://security.gentoo.org/glsa/201606-17