NULL pointer dereference in Heimdal Project
CVE-2021-44758
Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xv (Third Party Advisory)
- github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580 (Patch, Third Party Advisory)
- security.gentoo.org/glsa/202310-06
Frequently asked questions
- What is CVE-2021-44758?
- CVE-2021-44758 is a high-severity vulnerability in Heimdal Project, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2022-12-26.
- How severe is CVE-2021-44758?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-44758 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.