CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
68.3%
Requests is a HTTP library. Since Requests 2.3.0, Requests has been leaking Proxy-Authorization headers to destination servers when redirected to an HTTPS endpoint. This is a product of how we use rebuild_proxies
to reattach the Proxy-Authorization
header to requests. For HTTP connections sent through the tunnel, the proxy will identify the header in the request itself and remove it prior to forwarding to the destination server. However when sent over HTTPS, the Proxy-Authorization
header must be sent in the CONNECT request as the proxy has no visibility into the tunneled request. This results in Requests forwarding proxy credentials to the destination server unintentionally, allowing a malicious actor to potentially exfiltrate sensitive information. This issue has been patched in version 2.31.0.
[
{
"vendor": "psf",
"product": "requests",
"versions": [
{
"version": ">= 2.3.0, < 2.31.0",
"status": "affected"
}
]
}
]
github.com/psf/requests/commit/74ea7cf7a6a27a4eeb2ae24e162bcc942a6706d5
github.com/psf/requests/releases/tag/v2.31.0
github.com/psf/requests/security/advisories/GHSA-j8r2-6x86-q33q
lists.debian.org/debian-lts-announce/2023/06/msg00018.html
lists.fedoraproject.org/archives/list/[email protected]/message/AW7HNFGYP44RT3DUDQXG2QT3OEV2PJ7Y/
lists.fedoraproject.org/archives/list/[email protected]/message/KOYASTZDGQG2BWLSNBPL3TQRL2G7QYNZ/
security.gentoo.org/glsa/202309-08
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
AI Score
Confidence
High
EPSS
Percentile
68.3%