CVE-2019-11555 (GCVE-0-2019-11555)

Vulnerability from cvelistv5 – Published: 2019-04-26 21:16 – Updated: 2024-08-04 22:55
VLAI
Summary
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.
Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://www.openwall.com/lists/oss-security/2019/… x_refsource_MISC
https://w1.fi/security/2019-5/eap-pwd-message-rea… x_refsource_MISC
https://w1.fi/security/2019-5/ x_refsource_MISC
http://www.openwall.com/lists/oss-security/2019/04/26/1 mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3969-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3969-2/ vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://security.FreeBSD.org/advisories/FreeBSD-S… vendor-advisoryx_refsource_FREEBSD
https://seclists.org/bugtraq/2019/May/40 mailing-listx_refsource_BUGTRAQ
https://www.debian.org/security/2019/dsa-4450 vendor-advisoryx_refsource_DEBIAN
https://seclists.org/bugtraq/2019/May/64 mailing-listx_refsource_BUGTRAQ
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://security.gentoo.org/glsa/201908-25 vendor-advisoryx_refsource_GENTOO
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Advisory\"]},{\"url\":\"https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-with-unexpected-fragment.txt\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://www.debian.org/security/2019/dsa-4450\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://www.openwall.com/lists/oss-security/2019/04/18/6\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-01-13T21:26:10+00:00",
      "cve": "CVE-2019-11555",
      "id": "CVE-2019-11555",
      "initial_release_date": "2019-04-18T00:00:00+00:00",
      "product_status:known_not_affected": "7",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "wpa_supplicant: NULL pointer dereference due to improper fragmentation reassembly state validation in EAP-pwd implementation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-11555.json",
      "version": "3"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.