CVSS: 7.5EPSS: 0%CPEs: 62EXPL: 1CVE-2020-8285 – curl: Malicious FTP server can trigger stack overflow when CURLOPT_CHUNK_BGN_FUNCTION is used
https://notcve.org/view.php?id=CVE-2020-8285
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. curl versiones 7.21.0 hasta 7.73.0 e incluyéndola, es vulnerable a una recursividad no controlada debido a un problema de desbordamiento de la pila en el análisis de coincidencias del comodín FTP Libcurl offers a wildcard matching functionality, which allows a callback (set with `CURLOPT_CHUNK_BGN_FUNCTION`) to return information back to libcurl on how to handle a specific entry in a directory when libcurl iterates over a list of all available entries. When this callback returns `CURL_CHUNK_BGN_FUNC_SKIP`, to tell libcurl to not deal with that file, the internal function in libcurl then calls itself recursively to handle the next directory entry. If there's a sufficient amount of file entries and if the callback returns "skip" enough number of times, libcurl runs out of stack space. The exact amount will of course vary with platforms, compilers and other environmental factors. • http://seclists.org/fulldisclosure/2021/Apr/51 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://curl.se/docs/CVE-2020-8285.html https://github.com/curl/curl/issues/6255 https://hackerone.com/reports/1045844 https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E https://lists.debian.org/debian-lts • CWE-121: Stack-based Buffer Overflow CWE-674: Uncontrolled Recursion CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 40EXPL: 1CVE-2020-8286 – curl: Inferior OCSP verification
https://notcve.org/view.php?id=CVE-2020-8286
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. curl versiones 7.41.0 hasta 7.73.0, es vulnerable a una comprobación inapropiada para la revocación del certificado debido a una verificación insuficiente de la respuesta OCSP Libcurl offers "OCSP stapling" via the CURLOPT_SSL_VERIFYSTATUS option. When set, libcurl verifies the OCSP response that a server responds with as part of the TLS handshake. It then aborts the TLS negotiation if something is wrong with the response. The same feature can be enabled with --cert-status using the curl tool. As part of the OCSP response verification, a client should verify that the response is indeed set out for the correct certificate. • http://seclists.org/fulldisclosure/2021/Apr/50 http://seclists.org/fulldisclosure/2021/Apr/51 http://seclists.org/fulldisclosure/2021/Apr/54 https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://curl.se/docs/CVE-2020-8286.html https://hackerone.com/reports/1048457 https://lists.debian.org/debian-lts-announce/2020/12/msg00029.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fe • CWE-295: Improper Certificate Validation •
CVSS: 7.5EPSS: 0%CPEs: 7EXPL: 1CVE-2020-8231 – curl: Expired pointer dereference via multi API with CURLOPT_CONNECT_ONLY option set
https://notcve.org/view.php?id=CVE-2020-8231
Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data. Debido al uso de un puntero colgante, libcurl versiones 7.29.0 hasta 7.71.1, puede usar la conexión errónea cuando envía datos A flaw was found in libcurl from versions 7.29.0 through 7.71.1. An application that performs multiple requests with libcurl's multi API, and sets the `CURLOPT_CONNECT_ONLY` option, might experience libcurl using the wrong connection. The highest threat from this vulnerability is to data confidentiality. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://curl.haxx.se/docs/CVE-2020-8231.html https://hackerone.com/reports/948876 https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E https://security.gentoo.org/glsa/202012-14 https://www.debian.org/security/2021/dsa-4881 https://www.oracle.com/securi • CWE-416: Use After Free CWE-822: Untrusted Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 8EXPL: 1CVE-2020-8169 – libcurl: partial password leak over DNS on HTTP redirect
https://notcve.org/view.php?id=CVE-2020-8169
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). curl versiones 7.62.0 hasta 7.70.0, es susceptible a una vulnerabilidad de divulgación de información que puede conllevar a que una contraseña parcial sea filtrada a través de la red y a servidor(es) DNS A flaw was found in libcurl. A part of a password may be prepended to the host name before the host name is resolved, leading to a leak of the partial password over the network and to DNS servers. This highest threat from this vulnerability is to data confidentiality. • https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdf https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://curl.se/docs/CVE-2020-8169.html https://hackerone.com/reports/874778 https://www.debian.org/security/2021/dsa-4881 https://access.redhat.com/security/cve/CVE-2020-8169 https://bugzilla.redhat.com/show_bug.cgi?id=1847916 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 7.8EPSS: 0%CPEs: 30EXPL: 1CVE-2020-8177 – curl: Incorrect argument check can allow remote servers to overwrite local files
https://notcve.org/view.php?id=CVE-2020-8177
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. curl versiones 7.20.0 hasta 7.70.0, es vulnerable a una restricción inapropiada de nombres para archivos y otros recursos que pueden conllevar a sobrescribir demasiado un archivo local cuando el flag -J es usado A flaw was found in curl. Overwriting local files is possible when using a certain combination of command line options. Requesting content from a malicious server could lead to overwriting local files with compromised files leading to unknown effects. The highest threat from this vulnerability is to file integrity. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://curl.se/docs/CVE-2020-8177.html https://hackerone.com/reports/887462 https://www.debian.org/security/2021/dsa-4881 https://www.oracle.com/security-alerts/cpujan2022.html https://access.redhat.com/security/cve/CVE-2020-8177 https://bugzilla.redhat.com/show_bug.cgi?id=1847915 • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •