USN-5079-2 curl vulnerabilities

USN-5079-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: Patrick Monnerat discovered that curl incorrectly handled upgrades to TLS. When receiving certain responses from servers, curl woul...

USN-5079-1: curl vulnerabilities

It was discovered that curl incorrect handled memory when sending data to an MQTT server. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. CVE-2021-22945 Patrick Monnerat discovered that curl incorrectly handled...

CURL-CVE-2021-22946 Protocol downgrade required TLS bypassed

A user can tell curl to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server --ssl-reqd on the command line or CURLOPTUSESSL set to CURLUSESSLCONTROL or CURLUSESSLALL with libcurl. This requirement could be bypassed if the server would return a properly crafted but...

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...

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...

Protocol downgrade required TLS bypassed

A user can tell curl to require a successful upgrade to TLS when speaking to an IMAP, POP3 or FTP server --ssl-reqd on the command line or CURLOPTUSESSL set to CURLUSESSLCONTROL or CURLUSESSLALL with libcurl. This requirement could be bypassed if the server would return a properly crafted but...

CVE-2021-22947

A flaw was found in curl. The flaw lies in how curl handles cached or pipelined responses that it receives from either a IMAP, POP3, SMTP or FTP server before the TLS upgrade using STARTTLS. In such a scenario curl even after upgrading to TLS would trust these cached responses treating them as...

CVE-2021-22946

A flaw was found in curl. This flaw lies in the --ssl-reqd option or related settings in libcurl. Users specify this flag to upgrade to TLS when communicating with either IMAP, POP3 or a FTP server. An attacker controlling such servers could return a crafted response which could lead to curl clie...

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...

Ubuntu 16.04 ESM : curl vulnerabilities (USN-5079-2)

The remote Ubuntu 16.04 ESM host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5079-2 advisory. USN-5079-1 fixed several vulnerabilities in curl. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Tenable has...

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...

UBUNTU-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...

Medium: curl

Issue Overview: A flaw was found in curl in the way curl handles a file hash mismatch after downloading content using the Metalink feature. This flaw allows malicious actors controlling a hosting server to trick users into downloading malicious content. The highest threat from this vulnerability ...

PT-2021-4913

Name of the Vulnerable Software and Affected Versions curl versions 7.20.0 through 7.78.0 Description The issue allows an attacker to bypass the requirement for a successful upgrade to TLS when speaking to an IMAP, POP3, or FTP server. This can be achieved if the server returns a properly crafted...

PT-2021-4653 · Curl +10 · Curl +10

Name of the Vulnerable Software and Affected Versions: curl versions 7.20.0 through 7.78.0 Description: The issue concerns the implementation of the STARTTLS protocol in curl, which can lead to insufficient authentication of data. This allows a Man-In-The-Middle attacker to inject fake responses...

UBUNTU-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...

cURL -- Multiple vulnerabilities

The cURL project reports: UAF and double-free in MQTT sending CVE-2021-22945 Protocol downgrade required TLS bypassed CVE-2021-22946 STARTTLS protocol injection via MITM CVE-2021-22945...

Huawei EulerOS: Security Advisory for curl (EulerOS-SA-2021-2364)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2021 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...

EulerOS 2.0 SP2 : curl (EulerOS-SA-2021-2364)

According to the version of the curl packages installed, the EulerOS installation on the remote host is affected by the following vulnerability : - curl 7.7 through 7.76.1 suffers from an information disclosure when the -t command line option, known as CURLOPTTELNETOPTIONS in libcurl, is used to...

Nextcloud: Folder architecture and Filesizes of private file drop shares can be getten

Steps To Reproduce: 1. Create a new Folder "TestABC" 2. Share a password protected link of this folder 3. Create a file "README.md" and a file "README.md" in the Subfolder "Subfolder". == curl -H "OCS-APIREQUEST: true" "http://localhost/ocs/v2.php/apps/text/public/workspace?shareToken=ABCDE12345"...