NULL pointer dereference in Mit Kerberos_5
CVE-2021-37750
The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field.
EPSS: 0.022 (80.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mit Kerberos_5
- Oracle Communications_cloud_native_core_network_slice_selection_function — versions 22.1.0
- Starwindsoftware Starwind_virtual_san — versions v8r13
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 33
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (Third Party Advisory, Release Notes)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-37750?
- CVE-2021-37750 is a medium-severity vulnerability in Mit Kerberos_5, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2021-08-23.
- How severe is CVE-2021-37750?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-37750 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.