CVE-2021-22890
CVSS V2 Medium 4.3
CVSS V3 Low 3.7
Description
curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly "short-cut" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.
Overview
- CVE ID
- CVE-2021-22890
- Assigner
- support@hackerone.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-04-01T18:15:12
- Last Modified Date
- 2022-04-06T16:20:12
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:* | 1 | OR | 7.63.0 | 7.75.0 |
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:broadcom:fabric_operating_system:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* | 1 | OR | 1.0.1.1 | |
| cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:oracle:essbase:21.2:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 3.7
- Base Severity
- LOW
- Exploitability Score
- 2.2
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://hackerone.com/reports/1129529 | Exploit Issue Tracking Patch Third Party Advisory |
| https://curl.se/docs/CVE-2021-22890.html | Patch Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP/ | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210521-0007/ | Third Party Advisory |
| https://security.gentoo.org/glsa/202105-36 | Third Party Advisory |
| https://www.oracle.com//security-alerts/cpujul2021.html | Third Party Advisory |
| https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf | Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-22890 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22890 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:29:31 | Added to TrackCVE | |||
| 2022-12-06 00:50:46 | cve-assignments@hackerone.com | support@hackerone.com | CVE Assigner | updated |
| 2022-12-06 00:50:46 | 2021-04-01T18:15Z | 2021-04-01T18:15:12 | CVE Published Date | updated |
| 2022-12-06 00:50:46 | 2022-04-06T16:20:12 | CVE Modified Date | updated | |
| 2022-12-06 00:50:46 | Analyzed | Vulnerability Status | updated |