RedHatRHSA-2021:4788(RHSA-2021:4788) Moderate: krb5 security update
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
0.003 Low
EPSS
Percentile
67.3%
Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC).
Security Fix(es):
- krb5: NULL pointer dereference in process_tgs_req() in kdc/do_tgs_req.c via a FAST inner body that lacks server field (CVE-2021-37750)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| RedHat | 7 | ppc64 | krb5-devel | < 1.15.1-51.el7_9 | krb5-devel-1.15.1-51.el7_9.ppc64.rpm |
| RedHat | 7 | ppc64 | krb5-server | < 1.15.1-51.el7_9 | krb5-server-1.15.1-51.el7_9.ppc64.rpm |
| RedHat | 7 | ppc64 | krb5-pkinit | < 1.15.1-51.el7_9 | krb5-pkinit-1.15.1-51.el7_9.ppc64.rpm |
| RedHat | 7 | ppc64le | libkadm5 | < 1.15.1-51.el7_9 | libkadm5-1.15.1-51.el7_9.ppc64le.rpm |
| RedHat | 7 | ppc64 | krb5-server-ldap | < 1.15.1-51.el7_9 | krb5-server-ldap-1.15.1-51.el7_9.ppc64.rpm |
| RedHat | 7 | ppc | krb5-devel | < 1.15.1-51.el7_9 | krb5-devel-1.15.1-51.el7_9.ppc.rpm |
| RedHat | 7 | s390 | krb5-libs | < 1.15.1-51.el7_9 | krb5-libs-1.15.1-51.el7_9.s390.rpm |
| RedHat | 7 | ppc64le | krb5-debuginfo | < 1.15.1-51.el7_9 | krb5-debuginfo-1.15.1-51.el7_9.ppc64le.rpm |
| RedHat | 7 | x86_64 | krb5-server | < 1.15.1-51.el7_9 | krb5-server-1.15.1-51.el7_9.x86_64.rpm |
| RedHat | 7 | s390x | krb5-debuginfo | < 1.15.1-51.el7_9 | krb5-debuginfo-1.15.1-51.el7_9.s390x.rpm |
Related
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
0.003 Low
EPSS
Percentile
67.3%