
CVE-2023-2953 – openldap: null pointer dereference in ber_memalloc_x function
https://notcve.org/view.php?id=CVE-2023-2953
30 May 2023 — A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function. A vulnerability was found in OpenLDAP, in ber_memalloc_x() function, leading to a null pointer dereference. This flaw can result in reduced system memory and cause LDAP authentication failures. The impact is primarily a disruption in authentication processes, which may hinder user access or service operations relying on LDAP for authentication. • http://seclists.org/fulldisclosure/2023/Jul/47 • CWE-476: NULL Pointer Dereference •

CVE-2023-28319 – curl: use after free in SSH sha256 fingerprint check
https://notcve.org/view.php?id=CVE-2023-28319
26 May 2023 — A use after free vulnerability exists in curl

CVE-2023-28320 – Apple Security Advisory 2023-07-24-6
https://notcve.org/view.php?id=CVE-2023-28320
26 May 2023 — A denial of service vulnerability exists in curl

CVE-2023-28321 – curl: IDN wildcard match may lead to Improper Cerificate Validation
https://notcve.org/view.php?id=CVE-2023-28321
26 May 2023 — An improper certificate validation vulnerability exists in curl

CVE-2023-28322 – curl: more POST-after-PUT confusion
https://notcve.org/view.php?id=CVE-2023-28322
26 May 2023 — An information disclosure vulnerability exists in curl

CVE-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 •

CVE-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) •

CVE-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 •

CVE-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 •

CVE-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 •