VulnerabilityModified
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.
HIGH 7.5EPSS 1.22%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.22% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- heimdal project/heimdal
- Source
- cve@mitre.org
References
- https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580Patch, Third Party Advisory
- https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xvThird Party Advisory
- https://security.gentoo.org/glsa/202310-06
- https://github.com/heimdal/heimdal/commit/f9ec7002cdd526ae84fbacbf153162e118f22580Patch, Third Party Advisory
- https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xvThird Party Advisory
- https://security.gentoo.org/glsa/202310-06
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.