Total
56 CVE
| CVE | Vendors | Products | Updated | CVSS v2 | CVSS v3 |
|---|---|---|---|---|---|
| CVE-2019-3823 | 5 Canonical, Debian, Haxx and 2 more | 7 Ubuntu Linux, Debian Linux, Libcurl and 4 more | 2023-12-10 | 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-2018-1000005 | 3 Canonical, Debian, Haxx | 3 Ubuntu Linux, Debian Linux, Libcurl | 2023-12-10 | 6.4 MEDIUM | 9.1 CRITICAL |
| libcurl 7.49.0 to and including 7.57.0 contains an out bounds read in code handling HTTP/2 trailers. It was reported (https://github.com/curl/curl/pull/2231) that reading an HTTP/2 trailer could mess up future trailers since the stored size was one byte less than required. The problem is that the code that creates HTTP/1-like headers from the HTTP/2 trailer data once appended a string like `:` to the target buffer, while this was recently changed to `: ` (a space was added after the colon) but the following math wasn't updated correspondingly. When accessed, the data is read out of bounds and causes either a crash or that the (too large) data gets passed to client write. This could lead to a denial-of-service situation or an information disclosure if someone has a service that echoes back or uses the trailers for something. | |||||
| CVE-2017-8818 | 1 Haxx | 2 Curl, Libcurl | 2023-12-10 | 7.5 HIGH | 9.8 CRITICAL |
| curl and libcurl before 7.57.0 on 32-bit platforms allow attackers to cause a denial of service (out-of-bounds access and application crash) or possibly have unspecified other impact because too little memory is allocated for interfacing to an SSL library. | |||||
| CVE-2017-1000099 | 1 Haxx | 1 Libcurl | 2023-12-10 | 4.3 MEDIUM | 6.5 MEDIUM |
| When asking to get a file from a file:// URL, libcurl provides a feature that outputs meta-data about the file using HTTP-like headers. The code doing this would send the wrong buffer to the user (stdout or the application's provide callback), which could lead to other private data from the heap to get inadvertently displayed. The wrong buffer was an uninitialized memory area allocated on the heap and if it turned out to not contain any zero byte, it would continue and display the data following that buffer in memory. | |||||
| CVE-2017-1000254 | 1 Haxx | 1 Libcurl | 2023-12-10 | 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-2017-1000257 | 2 Debian, Haxx | 2 Debian Linux, Libcurl | 2023-12-10 | 6.4 MEDIUM | 9.1 CRITICAL |
| An IMAP FETCH response line indicates the size of the returned data, in number of bytes. When that response says the data is zero bytes, libcurl would pass on that (non-existing) data with a pointer and the size (zero) to the deliver-data function. libcurl's deliver-data function treats zero as a magic number and invokes strlen() on the data to figure out the length. The strlen() is called on a heap based buffer that might not be zero terminated so libcurl might read beyond the end of it into whatever memory lies after (or just crash) and then deliver that to the application as if it was actually downloaded. | |||||
| CVE-2017-1000100 | 1 Haxx | 1 Libcurl | 2023-12-10 | 4.3 MEDIUM | 6.5 MEDIUM |
| When doing a TFTP transfer and curl/libcurl is given a URL that contains a very long file name (longer than about 515 bytes), the file name is truncated to fit within the buffer boundaries, but the buffer size is still wrongly updated to use the untruncated length. This too large value is then used in the sendto() call, making curl attempt to send more data than what is actually put into the buffer. The endto() function will then read beyond the end of the heap based buffer. A malicious HTTP(S) server could redirect a vulnerable libcurl-using client to a crafted TFTP URL (if the client hasn't restricted which protocols it allows redirects to) and trick it to send private memory contents to a remote server over UDP. Limit curl's redirect protocols with --proto-redir and libcurl's with CURLOPT_REDIR_PROTOCOLS. | |||||
| CVE-2017-8817 | 2 Debian, Haxx | 3 Debian Linux, Curl, Libcurl | 2023-12-10 | 7.5 HIGH | 9.8 CRITICAL |
| The FTP wildcard function in curl and libcurl before 7.57.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) or possibly have unspecified other impact via a string that ends with an '[' character. | |||||
| CVE-2017-8816 | 2 Debian, Haxx | 3 Debian Linux, Curl, Libcurl | 2023-12-10 | 7.5 HIGH | 9.8 CRITICAL |
| The NTLM authentication feature in curl and libcurl before 7.57.0 on 32-bit platforms allows attackers to cause a denial of service (integer overflow and resultant buffer overflow, and application crash) or possibly have unspecified other impact via vectors involving long user and password fields. | |||||
| CVE-2015-3237 | 3 Haxx, Hp, Oracle | 5 Curl, Libcurl, System Management Homepage and 2 more | 2023-12-10 | 6.4 MEDIUM | N/A |
| The smb_request_state function in cURL and libcurl 7.40.0 through 7.42.1 allows remote SMB servers to obtain sensitive information from memory or cause a denial of service (out-of-bounds read and crash) via crafted length and offset values. | |||||
| CVE-2015-3236 | 1 Haxx | 2 Curl, Libcurl | 2023-12-10 | 5.0 MEDIUM | N/A |
| cURL and libcurl 7.40.0 through 7.42.1 send the HTTP Basic authentication credentials for a previous connection when reusing a reset (curl_easy_reset) connection handle to send a request to the same host name, which allows remote attackers to obtain sensitive information via unspecified vectors. | |||||
| CVE-2016-7141 | 2 Haxx, Opensuse | 2 Libcurl, Leap | 2023-12-10 | 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-2016-7167 | 2 Fedoraproject, Haxx | 2 Fedora, Libcurl | 2023-12-10 | 7.5 HIGH | 9.8 CRITICAL |
| Multiple integer overflows in the (1) curl_escape, (2) curl_easy_escape, (3) curl_unescape, and (4) curl_easy_unescape functions in libcurl before 7.50.3 allow attackers to have unspecified impact via a string of length 0xffffffff, which triggers a heap-based buffer overflow. | |||||
| CVE-2016-5419 | 3 Debian, Haxx, Opensuse | 3 Debian Linux, Libcurl, Leap | 2023-12-10 | 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-2016-5421 | 5 Canonical, Debian, Fedoraproject and 2 more | 6 Ubuntu Linux, Debian Linux, Fedora and 3 more | 2023-12-10 | 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-2016-5420 | 3 Debian, Haxx, Opensuse | 3 Debian Linux, Libcurl, Leap | 2023-12-10 | 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-2015-3148 | 7 Apple, Canonical, Debian and 4 more | 8 Mac Os X, Ubuntu Linux, Debian Linux and 5 more | 2023-12-10 | 5.0 MEDIUM | N/A |
| cURL and libcurl 7.10.6 through 7.41.0 do not properly re-use authenticated Negotiate connections, which allows remote attackers to connect as other users via a request. | |||||
| CVE-2014-2522 | 2 Haxx, Microsoft | 3 Curl, Libcurl, Windows | 2023-12-10 | 4.0 MEDIUM | N/A |
| curl and libcurl 7.27.0 through 7.35.0, when running on Windows and using the SChannel/Winssl TLS backend, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate when accessing a URL that uses a numerical IP address, which allows man-in-the-middle attackers to spoof servers via an arbitrary valid certificate. | |||||
| CVE-2015-3153 | 5 Apple, Canonical, Debian and 2 more | 6 Mac Os X, Ubuntu Linux, Debian Linux and 3 more | 2023-12-10 | 5.0 MEDIUM | N/A |
| The default configuration for cURL and libcurl before 7.42.1 sends custom HTTP headers to both the proxy and destination server, which might allow remote proxy servers to obtain sensitive information by reading the header contents. | |||||
| CVE-2015-3145 | 8 Apple, Canonical, Debian and 5 more | 9 Mac Os X, Ubuntu Linux, Debian Linux and 6 more | 2023-12-10 | 7.5 HIGH | N/A |
| The sanitize_cookie_path function in cURL and libcurl 7.31.0 through 7.41.0 does not properly calculate an index, which allows remote attackers to cause a denial of service (out-of-bounds write and crash) or possibly have other unspecified impact via a cookie path containing only a double-quote character. | |||||