Vulnerability Monitor

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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.

Published

2021-08-23T05:15:08.063

Last Modified

2024-11-21T06:15:52.080

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mit	kerberos_5	< 1.18.5	Yes
Application	mit	kerberos_5	< 1.19.3	Yes
Operating System	fedoraproject	fedora	33	Yes
Operating System	debian	debian_linux	9.0	Yes
Application	starwindsoftware	starwind_virtual_san	v8r13	Yes
Application	oracle	communications_cloud_native_core_network_slice_selection_function	22.1.0	Yes

References

https://github.com/krb5/krb5/commit/d775c95af7606a51bf79547a94fa52ddd1cb7f49 Patch, Third Party Advisory ([email protected])
https://github.com/krb5/krb5/releases Release Notes, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html Mailing List, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFCLW7D46E4VCREKKH453T5DA4XOLHU2/ ([email protected])
https://security.netapp.com/advisory/ntap-20210923-0002/ Third Party Advisory ([email protected])
https://web.mit.edu/kerberos/advisories/ Vendor Advisory ([email protected])
https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory ([email protected])
https://www.starwindsoftware.com/security/sw-20220817-0004/ Third Party Advisory ([email protected])
https://github.com/krb5/krb5/commit/d775c95af7606a51bf79547a94fa52ddd1cb7f49 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/krb5/krb5/releases Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/09/msg00019.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MFCLW7D46E4VCREKKH453T5DA4XOLHU2/ (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210923-0002/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://web.mit.edu/kerberos/advisories/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.starwindsoftware.com/security/sw-20220817-0004/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)