Buffer overflow in W1.fi Wpa Supplicant
CVE-2015-5314
The eap_pwd_process function in eap_server/eap_server_pwd.c in hostapd 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when used with (1) an internal EAP server or (2) a RADIUS server and EAP-pwd is enabled in a runtime configuration, which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.023 (82.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- W1.fi Wpa Supplicant
- Debian Linux — versions 8.0
Weakness classification (CWE)
References
- www.ubuntu.com/usn/USN-2808-1 (vendor-advisory, Broken Link)
- www.debian.org/security/2015/dsa-3397 (vendor-advisory, Third Party Advisory)
- w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt (Mitigation, Vendor Advisory)
- www.openwall.com/lists/oss-security/2015/11/10/10 (mailing-list, Patch, Mailing List, Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2015-5314?
- CVE-2015-5314 is a medium-severity vulnerability in W1.fi Wpa Supplicant, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 5.9/10. Published 2018-02-21.
- How severe is CVE-2015-5314?
- Medium severity. CVSS v3 base score is 5.9 out of 10.