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278 vulnerabilities found for kerberos_5 by mit
CVE-2026-40356 (GCVE-0-2026-40356)
Vulnerability from nvd – Published: 2026-04-28 00:00 – Updated: 2026-04-28 13:10
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process to terminate in parse_message.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-28 13:10 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MIT | Kerberos 5 |
Affected:
1.18 , < 1.22.3
(custom)
|
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CVE-2026-40355 (GCVE-0-2026-40355)
Vulnerability from nvd – Published: 2026-04-28 00:00 – Updated: 2026-07-14 12:48
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-28 12:53 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| MIT | Kerberos 5 |
Affected:
1.18 , < 1.22.3
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
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CVE-2024-37371 (GCVE-0-2024-37371)
Vulnerability from nvd – Published: 2024-06-28 00:00 – Updated: 2026-07-14 12:38
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can cause invalid memory reads during GSS message token handling by sending message tokens with invalid length fields.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-09 15:31 UTC
CWE
- n/a
- CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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CVE-2024-37370 (GCVE-0-2024-37370)
Vulnerability from nvd – Published: 2024-06-28 00:00 – Updated: 2026-07-14 12:37
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-01 15:25 UTC
CWE
- n/a
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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CVE-2024-26462 (GCVE-0-2024-26462)
Vulnerability from nvd – Published: 2024-02-26 00:00 – Updated: 2025-03-25 20:05
VLAI
EPSS
VEX
Summary
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-25 20:04 UTC
CWE
- n/a
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
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CVE-2024-26461 (GCVE-0-2024-26461)
Vulnerability from nvd – Published: 2024-02-26 00:00 – Updated: 2024-08-14 15:15
VLAI
EPSS
VEX
Summary
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-14 15:09 UTC
CWE
- n/a
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mit | kerberos_5 |
Affected:
1.21.2
cpe:2.3:a:mit:kerberos_5:1.21.2:*:*:*:*:*:*:* |
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CVE-2024-26458 (GCVE-0-2024-26458)
Vulnerability from nvd – Published: 2024-02-26 00:00 – Updated: 2024-12-06 21:01
VLAI
EPSS
VEX
Summary
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-29 20:47 UTC
Assigner
References
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CVE-2023-39975 (GCVE-0-2023-39975)
Vulnerability from nvd – Published: 2023-08-16 00:00 – Updated: 2026-02-25 17:20
VLAI
EPSS
VEX
Summary
kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-15 05:16 UTC
CWE
- n/a
- CWE-415 - Double Free
Assigner
References
6 references
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CVE-2023-36054 (GCVE-0-2023-36054)
Vulnerability from nvd – Published: 2023-08-07 00:00 – Updated: 2024-10-11 13:57
VLAI
EPSS
VEX
Summary
lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-11 13:57 UTC
CWE
- n/a
Assigner
References
6 references
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CVE-2022-42898 (GCVE-0-2022-42898)
Vulnerability from nvd – Published: 2022-12-25 00:00 – Updated: 2025-04-14 18:33
VLAI
EPSS
VEX
Summary
PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 16:11 UTC
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
11 references
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CVE-2022-39028 (GCVE-0-2022-39028)
Vulnerability from nvd – Published: 2022-08-30 00:00 – Updated: 2024-08-03 11:10
VLAI
EPSS
VEX
Summary
telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2021-37750 (GCVE-0-2021-37750)
Vulnerability from nvd – Published: 2021-08-23 00:00 – Updated: 2024-08-04 01:30
VLAI
EPSS
VEX
Summary
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.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
8 references
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CVE-2021-36222 (GCVE-0-2021-36222)
Vulnerability from nvd – Published: 2021-07-22 17:28 – Updated: 2024-08-04 00:54
VLAI
EPSS
VEX
Summary
ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://web.mit.edu/kerberos/advisories/ | x_refsource_MISC |
| https://github.com/krb5/krb5/releases | x_refsource_MISC |
| https://www.debian.org/security/2021/dsa-4944 | vendor-advisoryx_refsource_DEBIAN |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://github.com/krb5/krb5/commit/fc98f520caeff… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2021102… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2021110… | x_refsource_CONFIRM |
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CVE-2020-28196 (GCVE-0-2020-28196)
Vulnerability from nvd – Published: 2020-11-06 07:07 – Updated: 2025-12-03 18:15
VLAI
EPSS
VEX
Summary
MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-03 18:14 UTC
CWE
- n/a
- CWE-674 - Uncontrolled Recursion
Assigner
References
14 references
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CVE-2019-14844 (GCVE-0-2019-14844)
Vulnerability from nvd – Published: 2019-09-26 11:50 – Updated: 2024-08-05 00:26
VLAI
EPSS
VEX
Summary
A flaw was found in, Fedora versions of krb5 from 1.16.1 to, including 1.17.x, in the way a Kerberos client could crash the KDC by sending one of the RFC 4556 "enctypes". A remote unauthenticated user could use this flaw to crash the KDC.
Severity
7.5 (High)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/krb5/krb5/pull/981 | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.netapp.com/advisory/ntap-2022032… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-40356 (GCVE-0-2026-40356)
Vulnerability from cvelistv5 – Published: 2026-04-28 00:00 – Updated: 2026-04-28 13:10
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.22.3, there is an integer underflow and resultant out-of-bounds read if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, possibly causing the process to terminate in parse_message.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-28 13:10 UTC
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MIT | Kerberos 5 |
Affected:
1.18 , < 1.22.3
(custom)
|
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CVE-2026-40355 (GCVE-0-2026-40355)
Vulnerability from cvelistv5 – Published: 2026-04-28 00:00 – Updated: 2026-07-14 12:48
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.22.3, there is a NULL pointer dereference if an application calls gss_accept_sec_context() on a system with a NegoEx mechanism registered in /etc/gss/mech. An unauthenticated remote attacker can trigger this, causing the process to terminate in parse_nego_message.
Severity
5.9 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-28 12:53 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| MIT | Kerberos 5 |
Affected:
1.18 , < 1.22.3
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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CVE-2024-37371 (GCVE-0-2024-37371)
Vulnerability from cvelistv5 – Published: 2024-06-28 00:00 – Updated: 2026-07-14 12:38
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can cause invalid memory reads during GSS message token handling by sending message tokens with invalid length fields.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-09 15:31 UTC
CWE
- n/a
- CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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CVE-2024-37370 (GCVE-0-2024-37370)
Vulnerability from cvelistv5 – Published: 2024-06-28 00:00 – Updated: 2026-07-14 12:37
VLAI
EPSS
VEX
Summary
In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-01 15:25 UTC
CWE
- n/a
- CWE-345 - Insufficient Verification of Data Authenticity
Assigner
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
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CVE-2024-26462 (GCVE-0-2024-26462)
Vulnerability from cvelistv5 – Published: 2024-02-26 00:00 – Updated: 2025-03-25 20:05
VLAI
EPSS
VEX
Summary
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-25 20:04 UTC
CWE
- n/a
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
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CVE-2024-26461 (GCVE-0-2024-26461)
Vulnerability from cvelistv5 – Published: 2024-02-26 00:00 – Updated: 2024-08-14 15:15
VLAI
EPSS
VEX
Summary
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-14 15:09 UTC
CWE
- n/a
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mit | kerberos_5 |
Affected:
1.21.2
cpe:2.3:a:mit:kerberos_5:1.21.2:*:*:*:*:*:*:* |
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CVE-2024-26458 (GCVE-0-2024-26458)
Vulnerability from cvelistv5 – Published: 2024-02-26 00:00 – Updated: 2024-12-06 21:01
VLAI
EPSS
VEX
Summary
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-29 20:47 UTC
Assigner
References
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CVE-2023-39975 (GCVE-0-2023-39975)
Vulnerability from cvelistv5 – Published: 2023-08-16 00:00 – Updated: 2026-02-25 17:20
VLAI
EPSS
VEX
Summary
kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-15 05:16 UTC
CWE
- n/a
- CWE-415 - Double Free
Assigner
References
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CVE-2023-36054 (GCVE-0-2023-36054)
Vulnerability from cvelistv5 – Published: 2023-08-07 00:00 – Updated: 2024-10-11 13:57
VLAI
EPSS
VEX
Summary
lib/kadm5/kadm_rpc_xdr.c in MIT Kerberos 5 (aka krb5) before 1.20.2 and 1.21.x before 1.21.1 frees an uninitialized pointer. A remote authenticated user can trigger a kadmind crash. This occurs because _xdr_kadm5_principal_ent_rec does not validate the relationship between n_key_data and the key_data array count.
Severity
No CVSS data available.
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-11 13:57 UTC
CWE
- n/a
Assigner
References
6 references
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CVE-2022-42898 (GCVE-0-2022-42898)
Vulnerability from cvelistv5 – Published: 2022-12-25 00:00 – Updated: 2025-04-14 18:33
VLAI
EPSS
VEX
Summary
PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-14 16:11 UTC
CWE
- n/a
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
11 references
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CVE-2022-39028 (GCVE-0-2022-39028)
Vulnerability from cvelistv5 – Published: 2022-08-30 00:00 – Updated: 2024-08-03 11:10
VLAI
EPSS
VEX
Summary
telnetd in GNU Inetutils through 2.3, MIT krb5-appl through 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2021-37750 (GCVE-0-2021-37750)
Vulnerability from cvelistv5 – Published: 2021-08-23 00:00 – Updated: 2024-08-04 01:30
VLAI
EPSS
VEX
Summary
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.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
8 references
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CVE-2021-36222 (GCVE-0-2021-36222)
Vulnerability from cvelistv5 – Published: 2021-07-22 17:28 – Updated: 2024-08-04 00:54
VLAI
EPSS
VEX
Summary
ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://web.mit.edu/kerberos/advisories/ | x_refsource_MISC |
| https://github.com/krb5/krb5/releases | x_refsource_MISC |
| https://www.debian.org/security/2021/dsa-4944 | vendor-advisoryx_refsource_DEBIAN |
| https://www.oracle.com/security-alerts/cpuoct2021.html | x_refsource_MISC |
| https://github.com/krb5/krb5/commit/fc98f520caeff… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2021102… | x_refsource_CONFIRM |
| https://security.netapp.com/advisory/ntap-2021110… | x_refsource_CONFIRM |
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CVE-2020-28196 (GCVE-0-2020-28196)
Vulnerability from cvelistv5 – Published: 2020-11-06 07:07 – Updated: 2025-12-03 18:15
VLAI
EPSS
VEX
Summary
MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-03 18:14 UTC
CWE
- n/a
- CWE-674 - Uncontrolled Recursion
Assigner
References
14 references
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CVE-2019-14844 (GCVE-0-2019-14844)
Vulnerability from cvelistv5 – Published: 2019-09-26 11:50 – Updated: 2024-08-05 00:26
VLAI
EPSS
VEX
Summary
A flaw was found in, Fedora versions of krb5 from 1.16.1 to, including 1.17.x, in the way a Kerberos client could crash the KDC by sending one of the RFC 4556 "enctypes". A remote unauthenticated user could use this flaw to crash the KDC.
Severity
7.5 (High)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/krb5/krb5/pull/981 | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.netapp.com/advisory/ntap-2022032… | x_refsource_CONFIRM |
Impacted products
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