NVD Vulnerability Detail

CVE-2021-36976

Summary	libarchive 3.4.1 through 3.5.1 has a use-after-free in copy_string (called from do_uncompress_block and process_block).
Publication Date	July 20, 2021, 4:15 p.m.
Registration Date	July 20, 2021, 8 p.m.
Last Update	Nov. 21, 2024, 3:14 p.m.

CVSS3.1 : MEDIUM
スコア	6.5
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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)	不要
利用者の関与(UI)	要
影響の想定範囲(S)	変更なし
機密性への影響(C)	なし
完全性への影響(I)	なし
可用性への影響(A)	高

CVSS2.0 : MEDIUM
Score	4.3
Vector	AV:N/AC:M/Au:N/C:N/I:N/A:P
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	中
攻撃前の認証要否(Au)	不要
機密性への影響(C)	なし
完全性への影響(I)	なし
可用性への影響(A)	低
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	はい

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:libarchive:libarchive::::::::		3.4.1	3.5.2

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:35:::::::*

Configuration3	or higher	or less	more than	less than
cpe:2.3:o:apple:macos::::::::				12.3
cpe:2.3:o:apple:iphone_os::::::::				15.4
cpe:2.3:o:apple:ipados::::::::				15.4
cpe:2.3:o:apple:watchos::::::::				8.5

Configuration4	or higher	or less	more than	less than
cpe:2.3:a:splunk:universal_forwarder:9.1.0:::::::*
cpe:2.3:a:splunk:universal_forwarder::::::::	9.0.0			9.0.6
cpe:2.3:a:splunk:universal_forwarder::::::::	8.2.0			8.2.12

Related information, measures and tools

No	URL	タグ
1	http://seclists.org/fulldisclosure/2022/Mar/27	Mailing List Third Party Advisory
2	http://seclists.org/fulldisclosure/2022/Mar/27	Mailing List Third Party Advisory
3	http://seclists.org/fulldisclosure/2022/Mar/28	Mailing List Third Party Advisory
4	http://seclists.org/fulldisclosure/2022/Mar/28	Mailing List Third Party Advisory
5	http://seclists.org/fulldisclosure/2022/Mar/29	Mailing List Third Party Advisory
6	http://seclists.org/fulldisclosure/2022/Mar/29	Mailing List Third Party Advisory
7	https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32375	Issue Tracking Third Party Advisory
8	https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32375	Issue Tracking Third Party Advisory
9	https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libarchive/OSV-2021-557.yaml	Third Party Advisory
10	https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libarchive/OSV-2021-557.yaml	Third Party Advisory
11	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SE5NJQNM22ZE5Z55LPAGCUHSBQZBKMKC/	Mailing List Third Party Advisory
12	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SE5NJQNM22ZE5Z55LPAGCUHSBQZBKMKC/	Mailing List Third Party Advisory
13	https://security.gentoo.org/glsa/202208-26	Third Party Advisory
14	https://security.gentoo.org/glsa/202208-26	Third Party Advisory
15	https://support.apple.com/kb/HT213182	Third Party Advisory
16	https://support.apple.com/kb/HT213182	Third Party Advisory
17	https://support.apple.com/kb/HT213183	Third Party Advisory
18	https://support.apple.com/kb/HT213183	Third Party Advisory
19	https://support.apple.com/kb/HT213193	Third Party Advisory
20	https://support.apple.com/kb/HT213193	Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-416	解放済みメモリの使用	https://cwe.mitre.org/data/definitions/416.html

JVN Vulnerability Information

libarchive における解放済みメモリの使用に関する脆弱性

Title	libarchive における解放済みメモリの使用に関する脆弱性
Summary	libarchive には、解放済みメモリの使用に関する脆弱性が存在します。
Possible impacts	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	June 21, 2021, midnight
Registration Date	Sept. 8, 2022, 3:04 p.m.
Last Update	Sept. 8, 2022, 3:04 p.m.

Affected System

アップル

iOS 15.4 未満

iPadOS 15.4 未満

macOS 12.3 未満

watchOS 8.5 未満

Fedora Project

Fedora

libarchive

libarchive 3.4.1 から 3.5.1

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-2021-36976	https://www.cve.org/CVERecord?id=CVE-2021-36976
National Vulnerability Database (NVD)
2	CVE-2021-36976	https://nvd.nist.gov/vuln/detail/CVE-2021-36976

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-416	https://cwe.mitre.org/data/definitions/416.html

ベンダー情報

No	Name	URL
Apple Security Updates
1	HT213182	https://support.apple.com/en-us/HT213182
2	HT213183	https://support.apple.com/en-us/HT213183
3	HT213193	https://support.apple.com/en-us/HT213193
Apple セキュリティアップデート
4	HT213182	https://support.apple.com/ja-jp/HT213182
5	HT213183	https://support.apple.com/ja-jp/HT213183
6	HT213193	https://support.apple.com/ja-jp/HT213193
Fedora Update Notification
7	FEDORA-2022-9bb794c5f5	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SE5NJQNM22ZE5Z55LPAGCUHSBQZBKMKC/
GitHub
8	libarchive/libarchive	https://github.com/libarchive/libarchive

その他

No	Name	URL
関連文書
1	APPLE-SA-2022-03-14-1 iOS 15.4 and iPadOS 15.4	https://seclists.org/fulldisclosure/2022/Mar/27
2	APPLE-SA-2022-03-14-2 watchOS 8.5	https://seclists.org/fulldisclosure/2022/Mar/28
3	APPLE-SA-2022-03-14-4 macOS Monterey 12.3	https://seclists.org/fulldisclosure/2022/Mar/29
4	Issue 32375: libarchive:libarchive_fuzzer: Heap-use-after-free in copy_string	https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=32375

Change Log

No	Changed Details	Date of change
1	[2022年09月08日] 掲載	Sept. 8, 2022, 3:04 p.m.