Vulnerabilities (CVE)

Filtered by vendor Haxx Subscribe
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-9952 2 Haxx, Microsoft 2 Curl, Windows Embedded Compact 2023-12-15 6.8 MEDIUM 8.1 HIGH
The verify_certificate function in lib/vtls/schannel.c in libcurl 7.30.0 through 7.51.0, when built for Windows CE using the schannel TLS backend, makes it easier for remote attackers to conduct man-in-the-middle attacks via a crafted wildcard SAN in a server certificate, as demonstrated by "*.com."
CVE-2023-38039 2 Fedoraproject, Haxx 2 Fedora, Curl 2023-12-12 N/A 7.5 HIGH
When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API. However, curl did not have a limit in how many or how large headers it would accept in a response, allowing a malicious server to stream an endless series of headers and eventually cause curl to run out of heap memory.
CVE-2023-28319 3 Apple, Haxx, Netapp 12 Macos, Curl, Clustered Data Ontap and 9 more 2023-08-02 N/A 7.5 HIGH
A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed.
CVE-2022-27778 1 Haxx 1 Curl 2022-07-29 5.8 MEDIUM 8.1 HIGH
A use of incorrectly resolved name vulnerability fixed in 7.83.1 might remove the wrong file when `--no-clobber` is used together with `--remove-on-error`.
CVE-2021-22946 7 Apple, Debian, Fedoraproject and 4 more 33 Macos, Debian Linux, Fedora and 30 more 2022-07-25 5.0 MEDIUM 7.5 HIGH
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 or`CURLOPT_USE_SSL` set to `CURLUSESSL_CONTROL` or `CURLUSESSL_ALL` withlibcurl). This requirement could be bypassed if the server would return a properly crafted but perfectly legitimate response.This flaw would then make curl silently continue its operations **withoutTLS** contrary to the instructions and expectations, exposing possibly sensitive data in clear text over the network.
CVE-2022-27780 1 Haxx 1 Curl 2022-06-22 5.0 MEDIUM 7.5 HIGH
The curl URL parser wrongly accepts percent-encoded URL separators like '/'when decoding the host name part of a URL, making it a *different* URL usingthe wrong host name when it is later retrieved.For example, a URL like `http://example.com%2F127.0.0.1/`, would be allowed bythe parser and get transposed into `http://example.com/127.0.0.1/`. This flawcan be used to circumvent filters, checks and more.
CVE-2020-8177 4 Debian, Fujitsu, Haxx and 1 more 15 Debian Linux, M10-1, M10-1 Firmware and 12 more 2022-06-17 4.6 MEDIUM 7.8 HIGH
curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead too overwriting a local file when the -J flag is used.
CVE-2022-27781 1 Haxx 1 Curl 2022-06-13 5.0 MEDIUM 7.5 HIGH
libcurl provides the `CURLOPT_CERTINFO` option to allow applications torequest details to be returned about a server's certificate chain.Due to an erroneous function, a malicious server could make libcurl built withNSS get stuck in a never-ending busy-loop when trying to retrieve thatinformation.
CVE-2022-27775 1 Haxx 1 Curl 2022-06-13 5.0 MEDIUM 7.5 HIGH
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.
CVE-2022-27782 1 Haxx 1 Curl 2022-06-10 5.0 MEDIUM 7.5 HIGH
libcurl would reuse a previously created connection even when a TLS or SSHrelated option had been changed that should have prohibited reuse.libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse if one of them matches the setup. However, several TLS andSSH settings were left out from the configuration match checks, making themmatch too easily.
CVE-2022-22576 1 Haxx 1 Curl 2022-06-09 5.5 MEDIUM 8.1 HIGH
An improper authentication vulnerability exists in curl 7.33.0 to and including 7.82.0 which might allow reuse OAUTH2-authenticated connections without properly making sure that the connection was authenticated with the same credentials as set for this transfer. This affects SASL-enabled protocols: SMPTP(S), IMAP(S), POP3(S) and LDAP(S) (openldap only).
CVE-2021-22926 4 Haxx, Netapp, Oracle and 1 more 11 Curl, Active Iq Unified Manager, Clustered Data Ontap and 8 more 2022-05-16 5.0 MEDIUM 7.5 HIGH
libcurl-using applications can ask for a specific client certificate to be used in a transfer. This is done with the `CURLOPT_SSLCERT` option (`--cert` with the command line tool).When libcurl is built to use the macOS native TLS library Secure Transport, an application can ask for the client certificate by name or with a file name - using the same option. If the name exists as a file, it will be used instead of by name.If the appliction runs with a current working directory that is writable by other users (like `/tmp`), a malicious user can create a file name with the same name as the app wants to use by name, and thereby trick the application to use the file based cert instead of the one referred to by name making libcurl send the wrong client certificate in the TLS connection handshake.
CVE-2020-8285 8 Apple, Debian, Fedoraproject and 5 more 29 Mac Os X, Macos, Debian Linux and 26 more 2022-05-13 5.0 MEDIUM 7.5 HIGH
curl 7.21.0 to and including 7.73.0 is vulnerable to uncontrolled recursion due to a stack overflow issue in FTP wildcard match parsing.
CVE-2020-8231 4 Debian, Haxx, Oracle and 1 more 4 Debian Linux, Libcurl, Communications Cloud Native Core Policy and 1 more 2022-05-13 5.0 MEDIUM 7.5 HIGH
Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.
CVE-2020-8286 7 Apple, Debian, Fedoraproject and 4 more 19 Mac Os X, Macos, Debian Linux and 16 more 2022-05-13 5.0 MEDIUM 7.5 HIGH
curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response.
CVE-2021-22901 4 Haxx, Netapp, Oracle and 1 more 33 Curl, Active Iq Unified Manager, Cloud Backup and 30 more 2022-05-13 6.8 MEDIUM 8.1 HIGH
curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session ticket arrives over a connection. A malicious server can use this in rare unfortunate circumstances to potentially reach remote code execution in the client. When libcurl at run-time sets up support for TLS 1.3 session tickets on a connection using OpenSSL, it stores pointers to the transfer in-memory object for later retrieval when a session ticket arrives. If the connection is used by multiple transfers (like with a reused HTTP/1.1 connection or multiplexed HTTP/2 connection) that first transfer object might be freed before the new session is established on that connection and then the function will access a memory buffer that might be freed. When using that memory, libcurl might even call a function pointer in the object, making it possible for a remote code execution if the server could somehow manage to get crafted memory content into the correct place in memory.
CVE-2019-5443 4 Haxx, Microsoft, Netapp and 1 more 10 Curl, Windows, Oncommand Insight and 7 more 2021-11-03 4.4 MEDIUM 7.8 HIGH
A non-privileged user or program can put code and a config file in a known non-privileged path (under C:/usr/local/) that will make curl <= 7.65.1 automatically run the code (as an openssl "engine") on invocation. If that curl is invoked by a privileged user it can do anything it wants.
CVE-2020-8169 3 Debian, Haxx, Siemens 4 Debian Linux, Curl, Simatic Tim 1531 Irc and 1 more 2021-10-07 5.0 MEDIUM 7.5 HIGH
curl 7.62.0 through 7.70.0 is vulnerable to an information disclosure vulnerability that can lead to a partial password being leaked over the network and to the DNS server(s).
CVE-2016-8623 1 Haxx 1 Curl 2021-06-29 5.0 MEDIUM 7.5 HIGH
A flaw was found in curl before version 7.51.0. The way curl handles cookies permits other threads to trigger a use-after-free leading to information disclosure.
CVE-2016-8615 1 Haxx 1 Curl 2021-06-29 5.0 MEDIUM 7.5 HIGH
A flaw was found in curl before version 7.51. If cookie state is written into a cookie jar file that is later read back and used for subsequent requests, a malicious HTTP server can inject new cookies for arbitrary domains into said cookie jar.
CVE-2016-8625 1 Haxx 1 Curl 2021-06-29 5.0 MEDIUM 7.5 HIGH
curl before version 7.51.0 uses outdated IDNA 2003 standard to handle International Domain Names and this may lead users to potentially and unknowingly issue network transfer requests to the wrong host.
CVE-2016-9586 1 Haxx 1 Curl 2021-06-29 6.8 MEDIUM 8.1 HIGH
curl before version 7.52.0 is vulnerable to a buffer overflow when doing a large floating point output in libcurl's implementation of the printf() functions. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks.
CVE-2016-8617 1 Haxx 1 Curl 2021-06-29 4.4 MEDIUM 7.0 HIGH
The base64 encode function in curl before version 7.51.0 is prone to a buffer being under allocated in 32bit systems if it receives at least 1Gb as input via `CURLOPT_USERNAME`.
CVE-2017-1000254 1 Haxx 1 Libcurl 2021-06-29 5.0 MEDIUM 7.5 HIGH
libcurl may read outside of a heap allocated buffer when doing FTP. When libcurl connects to an FTP server and successfully logs in (anonymous or not), it asks the server for the current directory with the `PWD` command. The server then responds with a 257 response containing the path, inside double quotes. The returned path name is then kept by libcurl for subsequent uses. Due to a flaw in the string parser for this directory name, a directory name passed like this but without a closing double quote would lead to libcurl not adding a trailing NUL byte to the buffer holding the name. When libcurl would then later access the string, it could read beyond the allocated heap buffer and crash or wrongly access data beyond the buffer, thinking it was part of the path. A malicious server could abuse this fact and effectively prevent libcurl-based clients to work with it - the PWD command is always issued on new FTP connections and the mistake has a high chance of causing a segfault. The simple fact that this has issue remained undiscovered for this long could suggest that malformed PWD responses are rare in benign servers. We are not aware of any exploit of this flaw. This bug was introduced in commit [415d2e7cb7](https://github.com/curl/curl/commit/415d2e7cb7), March 2005. In libcurl version 7.56.0, the parser always zero terminates the string but also rejects it if not terminated properly with a final double quote.
CVE-2016-8624 1 Haxx 1 Curl 2021-06-29 5.0 MEDIUM 7.5 HIGH
curl before version 7.51.0 doesn't parse the authority component of the URL correctly when the host name part ends with a '#' character, and could instead be tricked into connecting to a different host. This may have security implications if you for example use an URL parser that follows the RFC to check for allowed domains before using curl to request them.
CVE-2019-3823 5 Canonical, Debian, Haxx and 2 more 7 Ubuntu Linux, Debian Linux, Libcurl and 4 more 2021-03-09 5.0 MEDIUM 7.5 HIGH
libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller.
CVE-2019-5436 7 Debian, F5, Fedoraproject and 4 more 11 Debian Linux, Traffix Signaling Delivery Controller, Fedora and 8 more 2020-10-20 4.6 MEDIUM 7.8 HIGH
A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1.
CVE-2018-16890 8 Canonical, Debian, F5 and 5 more 10 Ubuntu Linux, Debian Linux, Big-ip Access Policy Manager and 7 more 2020-09-18 5.0 MEDIUM 7.5 HIGH
libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.
CVE-2016-5421 5 Canonical, Debian, Fedoraproject and 2 more 6 Ubuntu Linux, Debian Linux, Fedora and 3 more 2020-05-08 6.8 MEDIUM 8.1 HIGH
Use-after-free vulnerability in libcurl before 7.50.1 allows attackers to control which connection is used or possibly have unspecified other impact via unknown vectors.
CVE-2017-7468 1 Haxx 1 Libcurl 2019-10-09 5.0 MEDIUM 7.5 HIGH
In curl and libcurl 7.52.0 to and including 7.53.1, libcurl would attempt to resume a TLS session even if the client certificate had changed. That is unacceptable since a server by specification is allowed to skip the client certificate check on resume, and may instead use the old identity which was established by the previous certificate (or no certificate). libcurl supports by default the use of TLS session id/ticket to resume previous TLS sessions to speed up subsequent TLS handshakes. They are used when for any reason an existing TLS connection couldn't be kept alive to make the next handshake faster. This flaw is a regression and identical to CVE-2016-5419 reported on August 3rd 2016, but affecting a different version range.
CVE-2016-9594 1 Haxx 1 Curl 2019-10-09 6.8 MEDIUM 8.1 HIGH
curl before version 7.52.1 is vulnerable to an uninitialized random in libcurl's internal function that returns a good 32bit random value. Having a weak or virtually non-existent random value makes the operations that use it vulnerable.
CVE-2018-1000121 5 Canonical, Debian, Haxx and 2 more 9 Ubuntu Linux, Debian Linux, Curl and 6 more 2019-07-23 5.0 MEDIUM 7.5 HIGH
A NULL pointer dereference exists in curl 7.21.0 to and including curl 7.58.0 in the LDAP code that allows an attacker to cause a denial of service
CVE-2016-5420 3 Debian, Haxx, Opensuse 3 Debian Linux, Libcurl, Leap 2018-11-13 5.0 MEDIUM 7.5 HIGH
curl and libcurl before 7.50.1 do not check the client certificate when choosing the TLS connection to reuse, which might allow remote attackers to hijack the authentication of the connection by leveraging a previously created connection with a different client certificate.
CVE-2016-7141 2 Haxx, Opensuse 2 Libcurl, Leap 2018-11-13 5.0 MEDIUM 7.5 HIGH
curl and libcurl before 7.50.2, when built with NSS and the libnsspem.so library is available at runtime, allow remote attackers to hijack the authentication of a TLS connection by leveraging reuse of a previously loaded client certificate from file for a connection for which no certificate has been set, a different vulnerability than CVE-2016-5420.
CVE-2016-8621 1 Haxx 1 Curl 2018-11-13 5.0 MEDIUM 7.5 HIGH
The `curl_getdate` function in curl before version 7.51.0 is vulnerable to an out of bounds read if it receives an input with one digit short.
CVE-2016-5419 3 Debian, Haxx, Opensuse 3 Debian Linux, Libcurl, Leap 2018-11-13 5.0 MEDIUM 7.5 HIGH
curl and libcurl before 7.50.1 do not prevent TLS session resumption when the client certificate has changed, which allows remote attackers to bypass intended restrictions by resuming a session.
CVE-2016-0755 3 Canonical, Debian, Haxx 3 Ubuntu Linux, Debian Linux, Curl 2018-10-17 5.0 MEDIUM 7.3 HIGH
The ConnectionExists function in lib/url.c in libcurl before 7.47.0 does not properly re-use NTLM-authenticated proxy connections, which might allow remote attackers to authenticate as other users via a request, a similar issue to CVE-2014-0015.
CVE-2003-1605 1 Haxx 1 Curl 2018-10-15 5.0 MEDIUM 7.5 HIGH
curl 7.x before 7.10.7 sends CONNECT proxy credentials to the remote server.
CVE-2016-4802 1 Haxx 1 Curl 2016-12-31 6.9 MEDIUM 7.8 HIGH
Multiple untrusted search path vulnerabilities in cURL and libcurl before 7.49.1, when built with SSPI or telnet is enabled, allow local users to execute arbitrary code and conduct DLL hijacking attacks via a Trojan horse (1) security.dll, (2) secur32.dll, or (3) ws2_32.dll in the application or current working directory.