Free Software Foundation Inc.
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6- 19 CVEs
- 5 CVEs
- 3 CVEs
- 2 CVEs
- 1 CVE
- 0 CVEs
Recent CVEs
30| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2021-20232 | Cri | 0.64 | 9.8 | 0.03 | Mar 12, 2021 | A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences. | ||
| CVE-2021-20231 | Cri | 0.57 | 9.8 | 0.04 | Mar 12, 2021 | A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences. | ||
| CVE-2025-13151 | Hig | 0.49 | 7.5 | 0.01 | Jan 7, 2026 | Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string. | ||
| CVE-2024-0567 | Hig | 0.49 | 7.5 | 0.01 | Jan 16, 2024 | A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTLS) rejects a certificate chain with distributed trust. This issue occurs when validating a certificate chain with cockpit-certificate-ensure. This flaw allows an unauthenticated, remote client or attacker to… | ||
| CVE-2024-0553 | Hig | 0.49 | 7.5 | 0.02 | Jan 16, 2024 | A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the… | ||
| CVE-2022-2509 | Hig | 0.49 | 7.5 | 0.02 | Aug 1, 2022 | A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function. | ||
| CVE-2020-22284 | Hig | 0.49 | 7.5 | 0.01 | Jul 22, 2021 | A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet. | ||
| CVE-2020-22283 | Hig | 0.49 | 7.5 | 0.01 | Jul 22, 2021 | A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet. | ||
| CVE-2020-24659 | Hig | 0.49 | 7.5 | 0.04 | Sep 4, 2020 | An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling… | ||
| CVE-2015-0294 | Hig | 0.49 | 7.5 | 0.02 | Jan 27, 2020 | GnuTLS before 3.3.13 does not validate that the signature algorithms match when importing a certificate. | ||
| CVE-2017-7507 | Hig | 0.49 | 7.5 | 0.03 | Jun 16, 2017 | GnuTLS version 3.5.12 and earlier is vulnerable to a NULL pointer dereference while decoding a status response TLS extension with valid contents. This could lead to a crash of the GnuTLS server application. | ||
| CVE-2026-42009 | Hig | 0.42 | 7.5 | 0.01 | May 18, 2026 | A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate… | ||
| CVE-2026-33845 | Hig | 0.42 | 7.5 | 0.01 | Apr 30, 2026 | A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of… | ||
| CVE-2025-6395 | Med | 0.42 | 6.5 | 0.01 | Jul 10, 2025 | A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite(). | ||
| CVE-2019-3836 | Med | 0.39 | 5.9 | 0.03 | Apr 1, 2019 | It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages. | ||
| CVE-2019-3829 | Med | 0.39 | 5.3 | 0.59 | Mar 27, 2019 | A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7. A memory corruption (double free) vulnerability in the certificate verification API. Any client or server application that verifies X.509 certificates with GnuTLS 3.5.8 or later is affected. | ||
| CVE-2008-4989 | Med | 0.39 | 5.9 | 0.02 | Nov 13, 2008 | The _gnutls_x509_verify_certificate function in lib/x509/verify.c in libgnutls in GnuTLS before 2.6.1 trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate, which allows man-in-the-middle attackers to insert a spoofed… | ||
| CVE-2026-3833 | Med | 0.35 | 6.5 | 0.01 | Apr 30, 2026 | A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can… | ||
| CVE-2024-12243 | Med | 0.35 | 5.3 | 0.01 | Feb 10, 2025 | A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to… | ||
| CVE-2024-12133 | Med | 0.35 | 5.3 | 0.01 | Feb 10, 2025 | A flaw in libtasn1 causes inefficient handling of specific certificate data. When processing a large number of elements in a certificate, libtasn1 takes much longer than expected, which can slow down or even crash the system. This flaw allows an attacker to send a specially… |
- risk 0.64cvss 9.8epss 0.03
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
- risk 0.57cvss 9.8epss 0.04
A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.
- risk 0.49cvss 7.5epss 0.01
Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.
- risk 0.49cvss 7.5epss 0.01
A vulnerability was found in GnuTLS, where a cockpit (which uses gnuTLS) rejects a certificate chain with distributed trust. This issue occurs when validating a certificate chain with cockpit-certificate-ensure. This flaw allows an unauthenticated, remote client or attacker to…
- risk 0.49cvss 7.5epss 0.02
A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the…
- risk 0.49cvss 7.5epss 0.02
A vulnerability found in gnutls. This security flaw happens because of a double free error occurs during verification of pkcs7 signatures in gnutls_pkcs7_verify function.
- risk 0.49cvss 7.5epss 0.01
A buffer overflow vulnerability in the zepif_linkoutput() function of Free Software Foundation lwIP git head version and version 2.1.2 allows attackers to access sensitive information via a crafted 6LoWPAN packet.
- risk 0.49cvss 7.5epss 0.01
A buffer overflow vulnerability in the icmp6_send_response_with_addrs_and_netif() function of Free Software Foundation lwIP version git head allows attackers to access sensitive information via a crafted ICMPv6 packet.
- risk 0.49cvss 7.5epss 0.04
An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling…
- risk 0.49cvss 7.5epss 0.02
GnuTLS before 3.3.13 does not validate that the signature algorithms match when importing a certificate.
- risk 0.49cvss 7.5epss 0.03
GnuTLS version 3.5.12 and earlier is vulnerable to a NULL pointer dereference while decoding a status response TLS extension with valid contents. This could lead to a crash of the GnuTLS server application.
- risk 0.42cvss 7.5epss 0.01
A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate…
- risk 0.42cvss 7.5epss 0.01
A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of…
- risk 0.42cvss 6.5epss 0.01
A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
- risk 0.39cvss 5.9epss 0.03
It was discovered in gnutls before version 3.6.7 upstream that there is an uninitialized pointer access in gnutls versions 3.6.3 or later which can be triggered by certain post-handshake messages.
- risk 0.39cvss 5.3epss 0.59
A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7. A memory corruption (double free) vulnerability in the certificate verification API. Any client or server application that verifies X.509 certificates with GnuTLS 3.5.8 or later is affected.
- risk 0.39cvss 5.9epss 0.02
The _gnutls_x509_verify_certificate function in lib/x509/verify.c in libgnutls in GnuTLS before 2.6.1 trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate, which allows man-in-the-middle attackers to insert a spoofed…
- risk 0.35cvss 6.5epss 0.01
A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can…
- risk 0.35cvss 5.3epss 0.01
A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to…
- risk 0.35cvss 5.3epss 0.01
A flaw in libtasn1 causes inefficient handling of specific certificate data. When processing a large number of elements in a certificate, libtasn1 takes much longer than expected, which can slow down or even crash the system. This flaw allows an attacker to send a specially…