CVE-2021-22947

When curl = 7.20.0 and = 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to upgrade to TLS security, the server can respond and send back multiple responses at once that curl caches. curl would then upgrade to TLS but not flush the in-queue of cached responses but instea...

ALPINE-CVE-2021-22947

When curl = 7.20.0 and = 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to upgrade to TLS security, the server can respond and send back multiple responses at once that curl caches. curl would then upgrade to TLS but not flush the in-queue of cached responses but instea...

Code injection

When curl = 7.20.0 and = 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to upgrade to TLS security, the server can respond and send back multiple responses at once that curl caches. curl would then upgrade to TLS but not flush the in-queue of cached responses but instea...

CVE-2021-22946

A user can tell curl = 7.20.0 and = 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server --ssl-reqd on the command line orCURLOPTUSESSL set to CURLUSESSLCONTROL or CURLUSESSLALL withlibcurl. This requirement could be bypassed if the server would return a...

CVE-2021-22947

CVE-2021-22947 affects curl when connecting to IMAP/POP3 servers using STARTTLS: multiple responses are cached before TLS, and after upgrading to TLS curl may trust pre‑TLS data, enabling a MITM injection of data. Affected releases range from curl 7.20.0 up to 7.78.0; exploitation details are not...

CVE-2021-22947

When curl = 7.20.0 and = 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to upgrade to TLS security, the server can respond and send back multiple responses at once that curl caches. curl would then upgrade to TLS but not flush the in-queue of cached responses but instea...

CVE-2021-22947

When curl = 7.20.0 and = 7.78.0 connects to an IMAP or POP3 server to retrieve data using STARTTLS to upgrade to TLS security, the server can respond and send back multiple responses at once that curl caches. curl would then upgrade to TLS but not flush the in-queue of cached responses but instea...

CVE-2021-22946

A user can tell curl = 7.20.0 and = 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server --ssl-reqd on the command line orCURLOPTUSESSL set to CURLUSESSLCONTROL or CURLUSESSLALL withlibcurl. This requirement could be bypassed if the server would return a...

CVE-2021-22946

CVE-2021-22946 affects curl before 7.82.0 (and within 7.20.0–7.78.0 per description) where the --ssl-reqd option or CURLUSESSL controls could be bypassed if a server crafts a legitimate response, allowing curl to continue without TLS. Connected sources confirm this flaw exists across multiple eco...

EulerOS 2.0 SP8 : ruby (EulerOS-SA-2021-2486)

According to the versions of the ruby packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a...

SUSE SLES11 Security Update : curl (SUSE-SU-2021:14807-1)

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:14807-1 advisory. - CVE-2021-22947: Fixed STARTTLS protocol injection via MITM bsc1190374. - CVE-2021-22946: Fixed protocol downgrade required TLS bypassed...

Fedora: Security Advisory for curl (FEDORA-2021-c5584b92d4)

The remote host is missing an update for the Copyright C 2021 Greenbone Networks GmbH 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-or-later This program is free software; you can...

[slackware-security] alpine

New alpine packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix a security issue. Here are the details from the Slackware 14.2 ChangeLog: patches/packages/alpine-2.25-i586-1slack14.2.txz: Upgraded. Fixed a denial-of-service security issue where untagged responses from an IMA...

[SECURITY] Fedora 34 Update: curl-7.76.1-12.fc34

curl is a command line tool for transferring data with URL syntax, supporting FTP, FTPS, HTTP, HTTPS, SCP, SFTP, TFTP, TELNET, DICT, LDAP, LDAPS, FILE, IMA P, SMTP, POP3 and RTSP. curl supports SSL certificates, HTTP POST, HTTP PUT, FTP uploading, HTTP form based upload, proxies, cookies,...

RHEL 7 : rh-ruby27-ruby (RHSA-2021:3559)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3559 advisory. Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system...

ruby: StartTLS stripping vulnerability in Net::IMAP

Ruby's Net::IMAP module did not raise an exception when receiving an unexpected response to the STARTTLS command and the connection was not upgraded to use TLS. A man-in-the-middle attacker could use this flaw to prevent Ruby applications using Net::IMAP to enable TLS encryption for a connection ...

Slackware Linux 14.0 / 14.1 / 14.2 / current curl Multiple Vulnerabilities (SSA:2021-258-01)

The version of curl installed on the remote host is prior to 7.79.0. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2021-258-01 advisory. - When curl = 7.20.0 and = 7.20.0 and = 7.78.0 to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP...

Amazon Linux 2 : thunderbird (ALAS-2021-1709)

The version of thunderbird installed on the remote host is prior to 78.13.0-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2021-1709 advisory. If Thunderbird was configured to use STARTTLS for an IMAP connection, and an attacker injected IMAP server responses...

Information Disclosure

Fetchmail is vulnerable to informaiton disclosure. It fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH...

CURL-CVE-2021-22947 STARTTLS protocol injection via MITM

When curl connects to an IMAP, POP3, SMTP or FTP server to exchange data securely using STARTTLS to upgrade the connection to TLS level, the server can still respond and send back multiple responses before the TLS upgrade. Such multiple pipelined responses are cached by curl. curl would then...