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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

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 is a medium-severity vulnerability affecting the curl library versions 7.1.1 through 7.75.0. The issue arises from libcurl's handling of the HTTP Referer header during automatic population in outgoing HTTP requests. Specifically, when libcurl sends a subsequent HTTP request, it automatically sets the Referer header to the URL of the previous request. However, if the previous URL contains embedded user credentials (e.g., username and password in the URL), libcurl does not strip these credentials before including the URL in the Referer header. This behavior results in the unintended leakage of sensitive credentials to the server targeted by the second HTTP request. The vulnerability is classified under CWE-359, which relates to the exposure of private personal information to unauthorized actors. The CVSS v3.1 base score is 5.3, reflecting a network attack vector with low complexity, no privileges or user interaction required, and limited confidentiality impact. There is no known exploitation in the wild reported. The vulnerability primarily threatens confidentiality by exposing credentials embedded in URLs to potentially untrusted servers, which could lead to unauthorized access or further compromise if those credentials are reused or sensitive. The flaw does not affect integrity or availability directly. This vulnerability is relevant for any application or system that uses vulnerable versions of libcurl and passes credentials in URLs, which is generally discouraged but still occurs in some legacy or misconfigured systems. The issue was publicly disclosed in April 2021, and users are advised to upgrade to libcurl versions beyond 7.75.0 where this behavior has been corrected to strip credentials from Referer headers.

Detailed information about CVE-2021-22876: Privacy Violation (CWE-359) in https://github.com/curl/curl affecting n/a https://github.com/curl/curl. Get real-time

CVE-2021-22876: Privacy Violation (CWE-359) in https://github.com/curl/curl - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2021-22876: Privacy Violation (CWE-359) in https://github.com/curl/curl

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