curl: URL globbing out of bounds read

curl supports "globbing" of URLs, in which a user can pass a numerical range to have the tool iterate over those numbers to do a sequence of transfers. In the globbing function that parses the numerical range, there was an omission that made curl read a byte beyond the end of the URL if given a...

curl: NTLM password overflow via integer overflow

curl before version 7.61.1 is vulnerable to a buffer overrun in the NTLM authentication code. The internal function Curlntlmcoremknthash multiplies the length of the password by two SUM to figure out how large temporary storage area to allocate from the heap. The length value is then subsequently...

curl: Incorrect reuse of client certificates

It was found that the libcurl library using the NSS Network Security Services library as TLS/SSL backend incorrectly re-used client certificates for subsequent TLS connections in certain cases. An attacker could potentially use this flaw to hijack the authentication of the connection by leveragin...

curl: FTP wildcard out of bounds read

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...

curl: Use-after-free via shared cookies

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...

curl: Glob parser write/read out of bounds

The 'globbing' feature in curl before version 7.51.0 has a flaw that leads to integer overflow and out-of-bounds read via user controlled input...

curl: URL unescape heap overflow via integer truncation

The URL percent-encoding decode function in libcurl before 7.51.0 is called curleasyunescape. Internally, even if this function would be made to allocate a unscape destination buffer larger than 2GB, it would return that new length in a signed 32 bit integer variable, thus the length would get...

curl: Out-of-bounds heap read when missing RTSP headers allows information leak or denial of service

curl version curl 7.20.0 to and including curl 7.59.0 contains a CWE-126: Buffer Over-read vulnerability in denial of service that can result in curl can be tricked into reading data beyond the end of a heap based buffer used to store downloaded RTSP content.. This vulnerability appears to have...

curl: escape and unescape integer overflows

Multiple integer overflow flaws leading to heap-based buffer overflows were found in the way curl handled escaping and unescaping of data. An attacker could potentially use these flaws to crash an application using libcurl by sending a specially crafted input to the affected libcurl functions...

curl: NTLM buffer overflow via integer overflow

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...

curl: TLS session resumption client cert bypass

It was found that the libcurl library did not prevent TLS session resumption when the client certificate had changed. An attacker could potentially use this flaw to hijack the authentication of the connection by leveraging a previously created connection with a different client certificate...

curl: Double-free in curl_maprintf

The libcurl API function called curlmaprintf before version 7.51.0 can be tricked into doing a double-free due to an unsafe sizet multiplication, on systems using 32 bit sizet variables...

curl: Double-free in krb5 code

The function readdata in security.c in curl before version 7.51.0 is vulnerable to memory double free...

curl: Invalid URL parsing with '#'

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 t...

curl: FTP path trickery leads to NIL byte out of bounds write

It was found that libcurl did not safely parse FTP URLs when using the CURLOPTFTPFILEMETHOD method. An attacker, able to provide a specially crafted FTP URL to an application using libcurl, could write a NULL byte at an arbitrary location, resulting in a crash or an unspecified behavior...

curl: RTSP RTP buffer over-read

A buffer over-read exists in curl 7.20.0 to and including curl 7.58.0 in the RTSP+RTP handling code that allows an attacker to cause a denial of service or information leakage...

curl: --write-out out of bounds read

The ourWriteOut function in toolwriteout.c in curl 7.53.1 might allow physically proximate attackers to obtain sensitive information from process memory in opportunistic circumstances by reading a workstation screen during use of a --write-out argument ending in a '%' character, which leads to a...

curl: Case insensitive password comparison

A flaw was found in curl before version 7.51.0 When re-using a connection, curl was doing case insensitive comparisons of user name and password with the existing connections. This means that if an unused connection with proper credentials exists for a protocol that has connection-scoped...

curl: IMAP FETCH response out of bounds read

A buffer overrun flaw was found in the IMAP handler of libcurl. By tricking an unsuspecting user into connecting to a malicious IMAP server, an attacker could exploit this flaw to potentially cause information disclosure or crash the application...

curl: HTTP authentication leak in redirects

It was found that curl and libcurl might send their Authentication header to a third party HTTP server upon receiving an HTTP REDIRECT reply. This could leak authentication token to external entities...