9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.015 Low
EPSS
Percentile
86.5%
Isaac Boukris reported that the Heimdal KDC before 7.7.1 does not apply delegation_not_allowed (aka not-delegated) user attributes for S4U2Self. Instead the forwardable flag is set even if the impersonated client has the not-delegated flag set. (CVE-2019-14870) Joseph Sutton discovered that the Heimdal KDC before 7.7.1 does not check for missing missing sname in TGS-REQ (Ticket Granting Server Request) before before dereferencing. An authenticated user could use this flaw to crash the KDC. (CVE-2021-3671) It was discovered that Heimdal is prone to a NULL dereference in acceptors when the initial SPNEGO token has no acceptable mechanisms, which may result in denial of service for a server application that uses the Simple and Protected GSSAPI Negotiation Mechanism (SPNEGO). (CVE-2021-44758) Evgeny Legerov reported that the DES and Triple-DES decryption routines in the Heimdal GSSAPI library before 7.7.1 were prone to buffer overflow on malloc() allocated memory when presented with a maliciously small packet. In addition, the Triple-DES and RC4 (arcfour) decryption routine were prone to non-constant time leaks, which could potentially yield to a leak of secret key material when using these ciphers. (CVE-2022-3437) It was discovered that Heimdal’s PKI certificate validation library before 7.7.1 can under some circumstances perform an out-of-bounds memory access when normalizing Unicode, which may result in denial of service. (CVE-2022-41916) Greg Hudson discovered an integer multiplication overflow in the Privilege Attribute Certificate (PAC) parsing routine, which may result in denial of service for Heimdal KDCs and possibly Heimdal servers (e.g., via GSS-API) on 32-bit systems. (CVE-2022-42898) Douglas Bagnall and the Heimdal maintainers independently discovered that Heimdal’s ASN.1 compiler before 7.7.1 generates code that allows specially crafted DER encodings of CHOICEs to invoke the wrong free() function on the decoded structure upon decode error, which may result in remote code execution in the Heimdal KDC and possibly the Kerberos client, the X.509 library, and other components as well. (CVE-2022-44640)
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Mageia | 8 | noarch | heimdal | < 7.7.1-1.2 | heimdal-7.7.1-1.2.mga8 |
bugs.mageia.org/show_bug.cgi?id=31172
github.com/heimdal/heimdal/security/advisories/GHSA-q77c-9qvp-qfw4
lists.fedoraproject.org/archives/list/[email protected]/thread/AYXWFESBZJMBNACFDHWWH7KETGKUXDPO/
www.debian.org/lts/security/2022/dla-3206
www.debian.org/security/2022/dsa-5286
www.debian.org/security/2022/dsa-5287
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
0.015 Low
EPSS
Percentile
86.5%