NVD Vulnerability Detail

CVE-2021-22924

Summary	libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errors in the logic, the config matching function did not take 'issuercert' into account and it compared the involved paths case insensitively,which could lead to libcurl reusing wrong connections.File paths are, or can be, case sensitive on many systems but not all, and caneven vary depending on used file systems.The comparison also didn't include the 'issuer cert' which a transfer can setto qualify how to verify the server certificate.
Publication Date	Aug. 6, 2021, 6:15 a.m.
Registration Date	Aug. 6, 2021, 10 a.m.
Last Update	Nov. 21, 2024, 2:50 p.m.

CVSS3.1 : LOW
スコア	3.7
Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
攻撃元区分(AV)	ネットワーク
攻撃条件の複雑さ(AC)	高
攻撃に必要な特権レベル(PR)	不要
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)	低
完全性への影響(I)	なし
可用性への影響(A)	なし

CVSS2.0 : MEDIUM
Score	4.3
Vector	AV:N/AC:M/Au:N/C:P/I:N/A:N
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)	低
完全性への影響(I)	なし
可用性への影響(A)	なし
Get all privileges.	いいえ
Get user privileges	いいえ
Get other privileges	いいえ
User operation required	いいえ

Affected software configurations

Configuration1		or higher	or less	more than	less than
cpe:2.3:a:haxx:libcurl::::::::		7.10.4			7.77.0

Configuration2		or higher	or less	more than	less than
cpe:2.3:o:fedoraproject:fedora:33:::::::*

Configuration3	or higher	or less	more than	less than
cpe:2.3:o:debian:debian_linux:9.0:::::::*
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:debian:debian_linux:11.0:::::::*

Configuration4	or higher	or less	more than	less than
cpe:2.3:a:netapp:cloud_backup:-:::::::*
cpe:2.3:a:netapp:clustered_data_ontap:-:::::::*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:::::::*
cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:::::::*

Configuration5	or higher	or less	more than	less than
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.57:::::::*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.58:::::::*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:8.59:::::::*
cpe:2.3:a:oracle:mysql_server::::::::	8.0.0	8.0.26
cpe:2.3:a:oracle:mysql_server::::::::	5.7.0	5.7.36

Configuration6	or higher	or less	more than	less than
cpe:2.3:a:siemens:sinec_infrastructure_network_services::::::::				1.0.1.1
cpe:2.3:a:siemens:sinema_remote_connect_server::::::::				3.1

Configuration7		or higher	or less	more than	less than
cpe:2.3:o:siemens:logo\!_cmr2040_firmware::::::::
execution environment
1	cpe:2.3:h:siemens:logo\!_cmr2040:-:::::::*

Configuration8		or higher	or less	more than	less than
cpe:2.3:o:siemens:logo\!_cmr2020_firmware::::::::
execution environment
1	cpe:2.3:h:siemens:logo\!_cmr2020:-:::::::*

Configuration9		or higher	or less	more than	less than
cpe:2.3:o:siemens:ruggedcomrm_1224_lte_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:ruggedcomrm_1224_lte:-:::::::*

Configuration10		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m804pb_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m804pb:-:::::::*

Configuration11		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m812-1_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m812-1:-:::::::*

Configuration12		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m816-1_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m816-1:-:::::::*

Configuration13		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m826-2_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m826-2:-:::::::*

Configuration14		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m874-2_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m874-2:-:::::::*

Configuration15		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m874-3_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m874-3:-:::::::*

Configuration16		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m876-3_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m876-3:-:::::::*

Configuration17		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_m876-4_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_m876-4:-:::::::*

Configuration18		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_mum856-1_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_mum856-1:-:::::::*

Configuration19		or higher	or less	more than	less than
cpe:2.3:o:siemens:scalance_s615_firmware::::::::					7.1
execution environment
1	cpe:2.3:h:siemens:scalance_s615:-:::::::*

Configuration20		or higher	or less	more than	less than
cpe:2.3:o:siemens:simatic_cp_1543-1_firmware::::::::					3.0.22
execution environment
1	cpe:2.3:h:siemens:simatic_cp_1543-1:-:::::::*

Configuration21		or higher	or less	more than	less than
cpe:2.3:o:siemens:simatic_cp_1545-1_firmware::::::::					1.1
execution environment
1	cpe:2.3:h:siemens:simatic_cp_1545-1:-:::::::*

Configuration22		or higher	or less	more than	less than
cpe:2.3:o:siemens:simatic_rtu3010c_firmware::::::::					5.0.14
execution environment
1	cpe:2.3:h:siemens:simatic_rtu3010c:-:::::::*

Configuration23		or higher	or less	more than	less than
cpe:2.3:o:siemens:simatic_rtu3030c_firmware::::::::					5.0.14
execution environment
1	cpe:2.3:h:siemens:simatic_rtu3030c:-:::::::*

Configuration24		or higher	or less	more than	less than
cpe:2.3:o:siemens:simatic_rtu3031c_firmware::::::::					5.0.14
execution environment
1	cpe:2.3:h:siemens:simatic_rtu3031c:-:::::::*

Configuration25		or higher	or less	more than	less than
cpe:2.3:o:siemens:simatic_rtu_3041c_firmware::::::::					5.0.14
execution environment
1	cpe:2.3:h:siemens:simatic_rtu_3041c:-:::::::*

Configuration26		or higher	or less	more than	less than
cpe:2.3:a:siemens:sinema_remote_connect::::::::					3.1

Configuration27		or higher	or less	more than	less than
cpe:2.3:o:siemens:siplus_net_cp_1543-1_firmware::::::::					3.0.22
execution environment
1	cpe:2.3:h:siemens:siplus_net_cp_1543-1:-:::::::*

Configuration28	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	https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	Patch Third Party Advisory
2	https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	Patch Third Party Advisory
3	https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf	Third Party Advisory
4	https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf	Third Party Advisory
5	https://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdf	Third Party Advisory
6	https://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdf	Third Party Advisory
7	https://hackerone.com/reports/1223565	Exploit Issue Tracking Patch Third Party Advisory
8	https://hackerone.com/reports/1223565	Exploit Issue Tracking Patch Third Party Advisory
9	https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3E	Mailing List Third Party Advisory
10	https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3E	Mailing List Third Party Advisory
11	https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3E	Mailing List Third Party Advisory
12	https://lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3E	Mailing List Third Party Advisory
13	https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3E	Mailing List Third Party Advisory
14	https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3E	Mailing List Third Party Advisory
15	https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3E	Mailing List Third Party Advisory
16	https://lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3E	Mailing List Third Party Advisory
17	https://lists.debian.org/debian-lts-announce/2021/08/msg00017.html	Mailing List Third Party Advisory
18	https://lists.debian.org/debian-lts-announce/2021/08/msg00017.html	Mailing List Third Party Advisory
19	https://lists.debian.org/debian-lts-announce/2022/08/msg00017.html	Mailing List Third Party Advisory
20	https://lists.debian.org/debian-lts-announce/2022/08/msg00017.html	Mailing List Third Party Advisory
21	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/	Mailing List Third Party Advisory
22	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/	Mailing List Third Party Advisory
23	https://security.netapp.com/advisory/ntap-20210902-0003/	Third Party Advisory
24	https://security.netapp.com/advisory/ntap-20210902-0003/	Third Party Advisory
25	https://www.debian.org/security/2022/dsa-5197	Third Party Advisory
26	https://www.debian.org/security/2022/dsa-5197	Third Party Advisory
27	https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
28	https://www.oracle.com/security-alerts/cpujan2022.html	Patch Third Party Advisory
29	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory
30	https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory

Common Vulnerabilities List

No	CWE	Name	URL
1	CWE-706	誤って解決された名前や参照の使用	https://cwe.mitre.org/data/definitions/706.html

JVN Vulnerability Information

cURL における誤って解決された名前や参照の使用に関する脆弱性

Title	cURL における誤って解決された名前や参照の使用に関する脆弱性
Summary	cURL には、誤って解決された名前や参照の使用に関する脆弱性が存在します。
Possible impacts	情報を取得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 11, 2021, midnight
Registration Date	May 19, 2022, 5:09 p.m.
Last Update	Sept. 19, 2025, 5:27 p.m.

Affected System

オラクル

MySQL

PeopleSoft Enterprise PeopleTools

日立

日立高信頼サーバ RV3000

Debian

Debian GNU/Linux

Fedora Project

Fedora

Haxx

cURL

NetApp

NetApp SolidFire & HCI Management Node

ONTAP (旧 Clustered Data ONTAP)

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-2021-22924	https://www.cve.org/CVERecord?id=CVE-2021-22924
National Vulnerability Database (NVD)
2	CVE-2021-22924	https://nvd.nist.gov/vuln/detail/CVE-2021-22924
関連文書
3	CVE-2021-22924: Bad connection reuse due to flawed path name checks	https://hackerone.com/reports/1223565

CWE (共通脆弱性タイプ一覧)

No	Name	URL
JVNDB
1	CWE-706	http://cwe.mitre.org/data/definitions/706.html

ベンダー情報

No	Name	URL
cURL
1	Top Page	https://curl.se/
Debian
2	[SECURITY] [DLA 2734-1] curl security update	https://lists.debian.org/debian-lts-announce/2021/08/msg00017.html
Fedora Update Notification
3	FEDORA-2021-5d21b90a30	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
NetApp Advisory
4	NTAP-20210902-0003	https://security.netapp.com/advisory/ntap-20210902-0003/
Oracle Critical Patch Update
5	Oracle Critical Patch Update Advisory - January 2022	https://www.oracle.com/security-alerts/cpujan2022.html
6	Oracle Critical Patch Update Advisory - October 2021	https://www.oracle.com/security-alerts/cpuoct2021.html
サーバ・クライアント製品セキュリティ情報
7	hitachi-sec-2023-204	https://www.hitachi.co.jp/products/it/server/security/info/vulnerable/hitachi_sec_2023_204.html

その他

No	Name	URL
JVN
1	JVNVU#91709091	https://jvn.jp/vu/JVNVU91709091/
2	JVNVU#99030761	https://jvn.jp/vu/JVNVU99030761/index.html

Change Log

No	Changed Details	Date of change
1	[2022年05月19日] 掲載	May 19, 2022, 5:09 p.m.
2	[2023年02月20日] 影響を受けるシステム：ベンダ情報の追加に伴い内容を更新ベンダ情報：日立 (hitachi-sec-2023-204) を追加	Feb. 20, 2023, 1:53 p.m.
3	[2025年09月19日] 参考情報：JVN (JVNVU#99030761) を追加	Sept. 19, 2025, 4:45 p.m.