CVSS: 5.9EPSS: 0%CPEs: 16EXPL: 1CVE-2023-27537 – Gentoo Linux Security Advisory 202310-12
https://notcve.org/view.php?id=CVE-2023-27537
30 Mar 2023 — A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate "handles". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free. Multiple vulnerabilities have been discovered in curl, the worst of which could result in arbitrary code execution. Ver... • https://hackerone.com/reports/1897203 • CWE-415: Double Free •
CVSS: 9.0EPSS: 0%CPEs: 15EXPL: 1CVE-2023-27534 – curl: SFTP path ~ resolving discrepancy
https://notcve.org/view.php?id=CVE-2023-27534
21 Mar 2023 — A path traversal vulnerability exists in curl <8.0.0 SFTP implementation causes the tilde (~) character to be wrongly replaced when used as a prefix in the first path element, in addition to its intended use as the first element to indicate a path relative to the user's home directory. Attackers can exploit this flaw to bypass filtering or execute arbitrary code by crafting a path like /~2/foo while accessing a server with a specific user. Harry Sintonen discovered that curl incorrectly handled certain TELN... • https://hackerone.com/reports/1892351 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 5.9EPSS: 0%CPEs: 16EXPL: 1CVE-2023-27536 – curl: GSS delegation too eager connection re-use
https://notcve.org/view.php?id=CVE-2023-27536
21 Mar 2023 — An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed. A flaw ... • https://hackerone.com/reports/1895135 • CWE-287: Improper Authentication CWE-305: Authentication Bypass by Primary Weakness •
CVSS: 7.7EPSS: 0%CPEs: 17EXPL: 1CVE-2023-27538 – curl: SSH connection too eager reuse still
https://notcve.org/view.php?id=CVE-2023-27538
21 Mar 2023 — An authentication bypass vulnerability exists in libcurl prior to v8.0.0 where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection. Harry Sin... • https://hackerone.com/reports/1898475 • CWE-287: Improper Authentication CWE-305: Authentication Bypass by Primary Weakness •
CVSS: 10.0EPSS: 0%CPEs: 15EXPL: 1CVE-2023-27533 – curl: TELNET option IAC injection
https://notcve.org/view.php?id=CVE-2023-27533
21 Mar 2023 — A vulnerability in input validation exists in curl <8.0 during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system. Harry Sintonen discov... • https://hackerone.com/reports/1891474 • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-75: Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) •
CVSS: 5.9EPSS: 0%CPEs: 16EXPL: 1CVE-2023-27535 – curl: FTP too eager connection reuse
https://notcve.org/view.php?id=CVE-2023-27535
21 Mar 2023 — An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could ... • https://hackerone.com/reports/1892780 • CWE-287: Improper Authentication CWE-305: Authentication Bypass by Primary Weakness •
CVSS: 9.4EPSS: 0%CPEs: 14EXPL: 1CVE-2023-23914 – curl: HSTS ignored on multiple requests
https://notcve.org/view.php?id=CVE-2023-23914
15 Feb 2023 — A cleartext transmission of sensitive information vulnerability exists in curl
CVSS: 6.5EPSS: 0%CPEs: 14EXPL: 0CVE-2023-23915 – curl: HSTS amnesia with --parallel
https://notcve.org/view.php?id=CVE-2023-23915
15 Feb 2023 — A cleartext transmission of sensitive information vulnerability exists in curl
CVSS: 7.8EPSS: 0%CPEs: 16EXPL: 1CVE-2023-23916 – curl: HTTP multi-header compression denial of service
https://notcve.org/view.php?id=CVE-2023-23916
15 Feb 2023 — An allocation of resources without limits or throttling vulnerability exists in curl
CVSS: 7.8EPSS: 0%CPEs: 10EXPL: 1CVE-2022-43551 – curl: HSTS bypass via IDN
https://notcve.org/view.php?id=CVE-2022-43551
21 Dec 2022 — A vulnerability exists in curl <7.87.0 HSTS check that could be bypassed to trick it to keep using HTTP. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. However, the HSTS mechanism could be bypassed if the host name in the given URL first uses IDN characters that get replaced to ASCII counterparts as part of the IDN conversion. Like using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the comm... • https://hackerone.com/reports/1755083 • CWE-319: Cleartext Transmission of Sensitive Information •