OESA-2021-1170 (CVE-2021-22890)
Vulnerability from osv_openeuler – Published: 2021-05-06 11:04 – Updated: 2026-08-06 11:04 – Source websitecURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.
Security Fix(es):
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.(CVE-2021-22890)
curl 7.1.1 to and including 7.75.0 is vulnerable to an "Exposure of Private Personal Information to an Unauthorized Actor" by leaking credentials in the HTTP Referer: header. libcurl does not strip off user credentials from the URL when automatically populating the Referer: HTTP request header field in outgoing HTTP requests, and therefore risks leaking sensitive data to the server that is the target of the second HTTP request.(CVE-2021-22876)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"curl-7.71.1-6.oe1.aarch64.rpm",
"curl-debugsource-7.71.1-6.oe1.aarch64.rpm",
"curl-debuginfo-7.71.1-6.oe1.aarch64.rpm",
"libcurl-devel-7.71.1-6.oe1.aarch64.rpm",
"libcurl-7.71.1-6.oe1.aarch64.rpm"
],
"noarch": [
"curl-help-7.71.1-6.oe1.noarch.rpm"
],
"src": [
"curl-7.71.1-6.oe1.src.rpm"
],
"x86_64": [
"curl-debuginfo-7.71.1-6.oe1.x86_64.rpm",
"libcurl-devel-7.71.1-6.oe1.x86_64.rpm",
"curl-debugsource-7.71.1-6.oe1.x86_64.rpm",
"libcurl-7.71.1-6.oe1.x86_64.rpm",
"curl-7.71.1-6.oe1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP1",
"name": "curl",
"purl": "pkg:rpm/openEuler/curl\u0026distro=openEuler-20.03-LTS-SP1"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "7.71.1-6.oe1"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "Medium"
},
"details": "cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.\r\n\r\nSecurity Fix(es):\r\n\r\ncurl 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 \u0026quot;short-cut\u0026quot; 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.(CVE-2021-22890)\r\n\r\ncurl 7.1.1 to and including 7.75.0 is vulnerable to an \u0026quot;Exposure of Private Personal Information to an Unauthorized Actor\u0026quot; by leaking credentials in the HTTP Referer: header. libcurl does not strip off user credentials from the URL when automatically populating the Referer: HTTP request header field in outgoing HTTP requests, and therefore risks leaking sensitive data to the server that is the target of the second HTTP request.(CVE-2021-22876)",
"id": "OESA-2021-1170",
"modified": "2026-08-06T11:04:24Z",
"published": "2021-05-06T11:04:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1170"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22890"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-22876"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "curl security update",
"upstream": [
"CVE-2021-22890",
"CVE-2021-22876"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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