CVE-2022-27775

An information disclosure vulnerability exists in curl 7.65.0 to 7.82.0 are vulnerable that by using an IPv6 address that was in the connection pool but with a different zone id it could reuse a connection instead.

An information disclosure vulnerability exists in curl 7.65.0 to 7.82.0 are vulnerable that by using an IPv6 address that was in the connection pool but with a different zone id it could reuse a connection instead.

An information disclosure vulnerability exists in curl 7.65.0 to 7.82.0 are vulnerable that by using an IPv6 address that was in the connection pool but with a different zone id it could reuse a connection instead.

cURL is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various protocols.

Security Fix(es):

This security flaw in curl allows to reuse an OAUTH2 authenticated connection without properly ensuring that the connection is authenticated with the same credentials set by this transport, this issue can lead to authentication bypasses, either by mistake or by malicious actors.(CVE-2022-22576)

When asked, curl does an HTTP(S) redirect. curl also supports authentication. When providing a user and password for a URL with a given hostname, curl makes an effort not to pass these credentials to other hosts in redirects unless permissions with special options are granted. This "same host check" has been flawed since its introduction. It does not work with cross-protocol redirection, nor does it treat different port numbers as separate hosts. This results in leaking credentials to other servers when curl redirects from authentication protected HTTP(S) URLs to other protocols and port numbers. It could also leak TLS SRP credentials in this way. By default, curl only allows redirects to HTTP(S) and FTP(S), but you can ask to allow redirects to all curl-supported protocols.(CVE-2022-27774)

This issue with curl occurs due to a logical bug where the configuration matching function does not take into account the IPv6 address zone id, which can cause curl to reuse the wrong connection when one transfer uses the zone id and subsequent transfers use another.(CVE-2022-27775)

This security flaw in curl allows leaking authentication or cookie header data over HTTP to redirect to the same host but a different port number, for applications passing custom Authorization: or Cookie: headers to the same set of headers Sending to servers on different port numbers is a problem, and these headers often contain privacy-sensitive information or data.(CVE-2022-27776)

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.

Security Fix(es):

• curl: bad local IPv6 connection reuse (CVE-2022-27775)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 9.1 Release Notes linked from the References section.

An information disclosure vulnerability exists in curl 7.65.0 to 7.82.0 are vulnerable that by using an IPv6 address that was in the connection pool but with a different zone id it could reuse a connection instead.

The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP.

Security Fix(es):

• curl: bad local IPv6 connection reuse (CVE-2022-27775)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

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 when one transfer uses a zone id and a subsequent transfer uses another (or no) zone id.

OAUTH2 bearer bypass in connection re-use. (CVE-2022-22576) Credential leak on redirect. (CVE-2022-27774) Bad local IPv6 connection reuse. (CVE-2022-27775) Auth/cookie leak on redirect. (CVE-2022-27776)

These are all security issues fixed in the curl-7.83.0-1.1 package on the GA media of openSUSE Tumbleweed.

This update for curl fixes the following issues:

• CVE-2022-27776: Fixed auth/cookie leak on redirect (bsc#1198766)
• CVE-2022-27775: Fixed bad local IPv6 connection reuse (bsc#1198723)
• CVE-2022-22576: Fixed OAUTH2 bearer bypass in connection re-use (bsc#1198614)

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 sensitive information. (CVE-2022-27774, CVE-2022-27775, CVE-2022-27776)