Gnutls
by Free Software Foundation Inc.
Source repositories
CVEs (17)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| 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-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-2025-32988 | Med | 0.35 | 6.5 | 0.01 | Jul 10, 2025 | A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call… | ||
| CVE-2024-28834 | Med | 0.35 | 5.3 | 0.01 | Mar 21, 2024 | A flaw was found in GnuTLS. The Minerva attack is a cryptographic vulnerability that exploits deterministic behavior in systems like GnuTLS, leading to side-channel leaks. In specific scenarios, such as when using the GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE flag, it can result in a… | ||
| CVE-2025-14831 | Med | 0.27 | 5.3 | 0.01 | Feb 9, 2026 | A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs). | ||
| CVE-2025-9820 | Med | 0.26 | 4.0 | 0.00 | Jan 26, 2026 | A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error… | ||
| CVE-2026-3832 | Low | 0.17 | 3.7 | 0.01 | Apr 30, 2026 | A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with… | ||
| CVE-2024-0567 | 0.00 | — | 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 | 0.00 | — | 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-2023-0361 | 0.00 | — | 0.01 | Feb 15, 2023 | A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the… | |||
| CVE-2022-2509 | 0.00 | — | 0.01 | 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-2015-0294 | 0.00 | — | 0.02 | Jan 27, 2020 | GnuTLS before 3.3.13 does not validate that the signature algorithms match when importing a certificate. | |||
| CVE-2019-3836 | 0.00 | — | 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 | 0.00 | — | 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. |
- 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 0.35cvss 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 6.5epss 0.01
A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call…
- risk 0.35cvss 5.3epss 0.01
A flaw was found in GnuTLS. The Minerva attack is a cryptographic vulnerability that exploits deterministic behavior in systems like GnuTLS, leading to side-channel leaks. In specific scenarios, such as when using the GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE flag, it can result in a…
- risk 0.27cvss 5.3epss 0.01
A flaw was found in GnuTLS. This vulnerability allows a denial of service (DoS) by excessive CPU (Central Processing Unit) and memory consumption via specially crafted malicious certificates containing a large number of name constraints and subject alternative names (SANs).
- risk 0.26cvss 4.0epss 0.00
A flaw was found in the GnuTLS library, specifically in the gnutls_pkcs11_token_init() function that handles PKCS#11 token initialization. When a token label longer than expected is processed, the function writes past the end of a fixed-size stack buffer. This programming error…
- risk 0.17cvss 3.7epss 0.01
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with…
- CVE-2024-0567Jan 16, 2024risk 0.00cvss —epss 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…
- CVE-2024-0553Jan 16, 2024risk 0.00cvss —epss 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…
- CVE-2023-0361Feb 15, 2023risk 0.00cvss —epss 0.01
A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the…
- CVE-2022-2509Aug 1, 2022risk 0.00cvss —epss 0.01
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-2015-0294Jan 27, 2020risk 0.00cvss —epss 0.02
GnuTLS before 3.3.13 does not validate that the signature algorithms match when importing a certificate.
- CVE-2019-3836Apr 1, 2019risk 0.00cvss —epss 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.
- CVE-2019-3829Mar 27, 2019risk 0.00cvss —epss 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.