NULL pointer dereference in Heimdal_project Heimdal
CVE-2017-17439
In Heimdal through 7.4, remote unauthenticated attackers are able to crash the KDC by sending a crafted UDP packet containing empty data fields for client name or realm. The parser would unconditionally dereference NULL pointers in that ca…
EPSS: 0.038 (88.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Heimdal_project Heimdal
- Debian Debian_linux — versions 9.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_CONFIRM, Mailing List, Third Party Advisory, Issue Tracking)
- cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2017-17439?
- CVE-2017-17439 is a high-severity vulnerability in Heimdal_project Heimdal, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2017-12-06.
- How severe is CVE-2017-17439?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-17439 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.