Authentication Bypass

curl is vulnerable to authentication bypass. A remote attacker is able to reuse OAUTH2-authenticated connections due to improper verification of credentials during a transfer, which allows the attacker to impersonate another user on the system...

Vulnerabilities fixed in cURL

Vulnerabilities have been fixed in cURL. The vulnerabilities allow a remote malicious party potentially able to obtain sensitive data obtain or to bypass authentication. The developers of cURL have released updates to fix the vulnerabilities. More information can be found on the pages below:...

Ubuntu: Security Advisory (USN-5397-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

USN-5397-1 curl vulnerabilities

Patrick Monnerat discovered that curl incorrectly handled certain OAUTH2. An attacker could possibly use this issue to access sensitive information. CVE-2022-22576 Harry Sintonen discovered that curl incorrectly handled certain requests. An attacker could possibly use this issue to expose sensiti...

USN-5397-1: curl vulnerabilities

Patrick Monnerat discovered that curl incorrectly handled certain OAUTH2. An attacker could possibly use this issue to access sensitive information. CVE-2022-22576 Harry Sintonen discovered that curl incorrectly handled certain requests. An attacker could possibly use this issue to expose sensiti...

curl: CVE-2022-27778: curl removes wrong file on error

Summary: Curl command has a logic flaw that results in removal of a wrong file when combining --no-clobber and --remove-on-error if the target file name exists and an error occurs. Steps To Reproduce: 1. echo "important file" foo 2. echo -ne "HTTP/1.1 200 OK\r\nContent-Length: 666\r\n\r\nHello\n"...

curl: CVE-2022-27779: cookie for trailing dot TLD

Summary: In CVE-2014-3620 curl prevents cookies from being set for Top Level Domains TLDs. According to the advisory, curl's "cookie parser has no Public Suffix awareness", but it will "reject TLDs from being allowed". However, a cookie can still be set for a TLD + trailing dot. A trailing dot...

Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : curl vulnerabilities (USN-5397-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5397-1 advisory. Patrick Monnerat discovered that curl incorrectly handled certain OAUTH2. An attacker could possibly use this issue to access...

PT-2022-2694 · Curl +4 · Curl +4

Name of the Vulnerable Software and Affected Versions: cURL affected versions not specified Description: The issue is related to the curl URL parser, which wrongly accepts percent-encoded URL separators like '/' when decoding the host name part of a URL. This can make it a different URL using the...

Slackware: Security Advisory (SSA:2022-117-01)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

FreeBSD : cURL -- Multiple vulnerabilities (92a4d881-c6cf-11ec-a06f-d4c9ef517024)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 92a4d881-c6cf-11ec-a06f-d4c9ef517024 advisory. - A insufficiently protected credentials vulnerability in fixed in curl 7.83.0 might leak...

CURL-CVE-2022-27776 Auth/cookie leak on redirect

curl might leak authentication or cookie header data on HTTP redirects to the same host but another port number. When asked to send custom headers or cookies in its HTTP requests, curl sends that set of headers only to the host which name is used in the initial URL, so that redirects to other hos...

Auth/cookie leak on redirect

curl might leak authentication or cookie header data on HTTP redirects to the same host but another port number. When asked to send custom headers or cookies in its HTTP requests, curl sends that set of headers only to the host which name is used in the initial URL, so that redirects to other hos...

CURL-CVE-2022-27775 Bad local IPv6 connection reuse

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse, if one of them matches the setup. Due to errors in the logic, the config matching function did not take the IPv6 address zone id into account which could lead to libcurl reusing the wrong connection...

Internet Bug Bounty: CVE-2022-27776: Auth/cookie leak on redirect

Summary: curl/libcurl can be coaxed to leak Authorization / Cookie headers by redirecting request to http:// URL on the same host. Successful exploitation requires that the attacker can either Man-in-the-Middle the connection or can access the traffic at the recipient side for example by...

Internet Bug Bounty: CVE-2022-27775: Bad local IPv6 connection reuse

Summary: curl/libcurl doesn't consider IPv6 address zone index when doing connection reuse. if connection exists to specific IPv6 address and other conditions for connection reuse are fulfilled it will be reused for connections regardless of the zone index. Steps To Reproduce: 1. Set up a fake...

Internet Bug Bounty: CVE-2022-27774: Credential leak on redirect

Summary: curl/libcurl can be coaxed to leak user credentials to third-party host by issuing HTTP redirect to ftp:// URL. Steps To Reproduce: 1. Configure for example Apache2 on firstsite.tld to perform redirect with modrewrite: RewriteCond %HTTPUSERAGENT "^curl/" RewriteRule ^/redirectpoc...

CVE-2022-27776

A vulnerability was found in curl. This security flaw allows leak authentication or cookie header data on HTTP redirects to the same host but another port number. Sending the same set of headers to a server on a different port number is a problem for applications that pass on custom Authorization...

CVE-2022-27775

A vulnerability was found in curl. This security flaw occurs due to errors in the logic where the config matching function did not take the IPv6 address zone id into account. This issue can lead to curl reusing the wrong connection when one transfer uses a zone id, and the subsequent transfer use...

CVE-2022-27774

A vulnerability was found in curl. This security flaw allows leaking credentials to other servers when it follows redirects from auth-protected HTTPS URLs to other protocols and port numbers...