NVD Vulnerability Detail

CVE-2022-42898

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."
Publication Date	Dec. 25, 2022, 3:15 p.m.
Registration Date	Dec. 26, 2022, 10 a.m.
Last Update	Nov. 21, 2024, 4:25 p.m.

CVSS3.1 : HIGH
スコア	8.8
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	低
攻撃に必要な特権レベル(PR)	低
利用者の関与(UI)	不要
影響の想定範囲(S)	変更なし
機密性への影響(C)	高
完全性への影響(I)	高
可用性への影響(A)	高

Affected software configurations

Configuration1	or higher	or less	more than	less than
cpe:2.3:a:mit:kerberos_5::::::::	1.8			1.19.4
cpe:2.3:a:mit:kerberos_5:1.20:beta1::::::
cpe:2.3:a:mit:kerberos_5:1.20:-::::::

Configuration2		or higher	or less	more than	less than
cpe:2.3:a:heimdal_project:heimdal::::::::					7.7.1

Configuration3	or higher	or less	more than	less than
cpe:2.3:a:samba:samba::::::::	4.17.0			4.17.3
cpe:2.3:a:samba:samba::::::::				4.15.12
cpe:2.3:a:samba:samba::::::::	4.16.0			4.16.7

Related information, measures and tools

No	URL	タグ
1	https://bugzilla.samba.org/show_bug.cgi?id=15203	Exploit Issue Tracking Patch Third Party Advisory
2	https://bugzilla.samba.org/show_bug.cgi?id=15203	Exploit Issue Tracking Patch Third Party Advisory
3	https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c	Third Party Advisory
4	https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c	Third Party Advisory
5	https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583	Patch Third Party Advisory
6	https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583	Patch Third Party Advisory
7	https://security.gentoo.org/glsa/202309-06
8	https://security.gentoo.org/glsa/202309-06
9	https://security.gentoo.org/glsa/202310-06
10	https://security.gentoo.org/glsa/202310-06
11	https://security.netapp.com/advisory/ntap-20230216-0008/
12	https://security.netapp.com/advisory/ntap-20230216-0008/
13	https://security.netapp.com/advisory/ntap-20230223-0001/
14	https://security.netapp.com/advisory/ntap-20230223-0001/
15	https://web.mit.edu/kerberos/advisories/	Vendor Advisory
16	https://web.mit.edu/kerberos/advisories/	Vendor Advisory
17	https://web.mit.edu/kerberos/krb5-1.19/	Release Notes Vendor Advisory
18	https://web.mit.edu/kerberos/krb5-1.19/	Release Notes Vendor Advisory
19	https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txt	Vendor Advisory
20	https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txt	Vendor Advisory
21	https://www.samba.org/samba/security/CVE-2022-42898.html	Third Party Advisory
22	https://www.samba.org/samba/security/CVE-2022-42898.html	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-190	整数オーバーフローまたはラップアラウンド	https://cwe.mitre.org/data/definitions/190.html

JVN Vulnerability Information

MIT Kerberos 5 および Heimdal における整数オーバーフローの脆弱性

Title	MIT Kerberos 5 および Heimdal における整数オーバーフローの脆弱性
Summary	MIT Kerberos 5 （別名 krb5 ）および Heimdal には、整数オーバーフローの脆弱性が存在します。
Possible impacts	情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態にされる可能性があります。
Solution	ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date	Nov. 15, 2022, midnight
Registration Date	March 24, 2023, 5:30 p.m.
Last Update	April 18, 2025, 10:28 a.m.

Affected System

Heimdal project

Heimdal 7.7.1 未満

Samba Project

Samba

MIT Kerberos

Kerberos 5 1.19.4 未満

Kerberos 5 1.20.1 未満の 1.20.x

CVE (情報セキュリティ共通脆弱性識別子)

No	Name	URL
Common Vulnerabilities and Exposures (CVE)
1	CVE-2022-42898	https://www.cve.org/CVERecord?id=CVE-2022-42898
National Vulnerability Database (NVD)
2	CVE-2022-42898	https://nvd.nist.gov/vuln/detail/CVE-2022-42898

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-190	https://cwe.mitre.org/data/definitions/190.html

ベンダー情報

No	Name	URL
GitHub
1	Fix integer overflows in PAC parsing	https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
2	PAC parse integer overflows	https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
MIT Kerberos
3	Kerberos 5 Release 1.19.4	https://web.mit.edu/kerberos/krb5-1.19/
4	Kerberos Security Advisories	https://web.mit.edu/kerberos/advisories/
5	Kerberos Version 5, Release 1.20	https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txt
Samba Security Releases
6	Samba buffer overflow vulnerabilities on 32-bit systems	https://www.samba.org/samba/security/CVE-2022-42898.html
The Samba-Bugzilla
7	Bug 15203	https://bugzilla.samba.org/show_bug.cgi?id=15203

その他

No	Name	URL
ICS-CERT ADVISORY
1	ICSA-25-105-08	https://www.cisa.gov/news-events/ics-advisories/icsa-25-105-08
JVN
2	JVNVU#92488108	https://jvn.jp/vu/JVNVU92488108/

Change Log

No	Changed Details	Date of change
1	[2023年03月24日] 掲載	March 24, 2023, 5:30 p.m.
2	[2025年04月18日] 参考情報：JVN (JVNVU#92488108) を追加参考情報：ICS-CERT ADVISORY (ICSA-25-105-08) を追加	April 18, 2025, 10:26 a.m.