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›vulnerability›CVE-2021-37750
Name
CVE-2021-37750
Source
NVD ( link)Debian ( link)
Description
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.
CWEs
CWE-476
Published Date
Updated Date
Workaround
-
Advisories
https://github.com/krb5/krb5/commit/d775c95af7606a51bf79547a94fa52ddd1cb7f49Patch
https://github.com/krb5/krb5/releasesRelease Notes
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.htmlMailing List
https://security.netapp.com/advisory/ntap-20210923-0002/Third Party Advisory
https://web.mit.edu/kerberos/advisories/Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch
https://www.starwindsoftware.com/security/sw-20220817-0004/Third Party Advisory
https://github.com/krb5/krb5/commit/d775c95af7606a51bf79547a94fa52ddd1cb7f49Patch
https://github.com/krb5/krb5/releasesRelease Notes
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.htmlMailing List
https://security.netapp.com/advisory/ntap-20210923-0002/Third Party Advisory
https://web.mit.edu/kerberos/advisories/Vendor Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlPatch
https://www.starwindsoftware.com/security/sw-20220817-0004/Third Party Advisory

Analysis#

Affected Component
Analysis
krb5
Patched

Vulnerability Ratings#

6.5
CVSSv31
4
CVSSv2

Others affected components#

Name
Project
Project Version
Version
Status
libkrb5
buildroot
2025.02.x
1.21.3
Not Affected
libkrb5
buildroot
master
1.22.2
Not Affected
krb5
openwrt
master
1.22.2-r1
Not Affected
krb5
openwrt
openwrt-25.12
1.22.1-r1
Not Affected
krb5
yocto
master
1.22.2
Not Affected
krb5
yocto
scarthgap
1.21.3
Not Affected

Resolved with patches#

krb5 (yocto:kirkstone)

#
Title
Author
Resolve
1
Fix KDC null deref on TGS inner body null server
Greg Hudson <ghudson@mit.edu>
CVE-2021-37750