NULL Pointer Dereference Affecting hostapd package, versions <2.6-r5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-ALPINE38-HOSTAPD-452181
- published27 Apr 2019
- disclosed26 Apr 2019
Introduced: 26 Apr 2019
CVE-2019-11555 (opens in a new tab)How to fix?
Upgrade Alpine:3.8 hostapd to version 2.6-r5 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream hostapd package and not the hostapd package as distributed by Alpine.
See How to fix? for Alpine:3.8 relevant fixed versions and status.
The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c.
References
- https://seclists.org/bugtraq/2019/May/40
- https://seclists.org/bugtraq/2019/May/64
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11555
- https://www.debian.org/security/2019/dsa-4450
- https://security-tracker.debian.org/tracker/CVE-2019-11555
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc
- https://security.gentoo.org/glsa/201908-25
- https://w1.fi/security/2019-5/
- https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html
- https://www.openwall.com/lists/oss-security/2019/04/18/6
- http://www.openwall.com/lists/oss-security/2019/04/26/1
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-11555
- https://usn.ubuntu.com/3969-1/
- https://usn.ubuntu.com/3969-2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5T7G763UECWR7FQXOJVL67PW7C5A3SA4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DJKZHAT5KPUN26JL77EUH563GAH5XZ5C/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IQ6P2GI5GSXRNLNIUNPARFZQVDEIGVZD/