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Sicherheitslücken in gnutls28 · Seite 2

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für gnutls28: 6. Davon im KEV-Katalog: 0.

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Sicherheitslücken: 30

  1. CVE-2025-9820

    Mittel · CVSS 4EPSS 0,22%Korrektur verfügbar

    Gnutls: stack-based buffer overflow in gnutls_pkcs11_token_init() function

    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 can cause the application using GnuTLS to crash or, in certain conditions, be exploited for code execution. As a result, systems or applications relying on GnuTLS may be vulnerable to a denial of service or local privilege escalation attacks.

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  3. CVE-2025-32990

    Mittel · CVSS 6.5EPSS 0,9%Korrektur verfügbar

    Gnutls: vulnerability in gnutls certtool template parsing

    A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

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  4. CVE-2025-32989

    Mittel · CVSS 5.3EPSS 1,47%Korrektur verfügbar

    Gnutls: vulnerability in gnutls sct extension parsing

    A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.

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  5. CVE-2025-32988

    Mittel · CVSS 6.5EPSS 1,47%Korrektur verfügbar

    Gnutls: vulnerability in gnutls othername san export

    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 asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.

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  6. CVE-2024-12243

    Mittel · CVSS 5.3EPSS 1,29%Korrektur verfügbar

    Gnutls: gnutls impacted by inefficient der decoding in libtasn1 leading to remote dos

    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 send a specially crafted certificate, causing GnuTLS to become unresponsive or slow, resulting in a denial-of-service condition.

    gnutls28Betriebssysteme
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  7. CVE-2024-28834

    Mittel · CVSS 5.3EPSS 0,72%Korrektur verfügbar

    Gnutls: vulnerable to minerva side-channel information leak

    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 noticeable step in nonce size from 513 to 512 bits, exposing a potential timing side-channel.

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  9. CVE-2024-0567

    Hoch · CVSS 7.5EPSS 1,38%Korrektur verfügbar

    Gnutls: rejects certificate chain with distributed trust

    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 initiate a denial of service attack.

    gnutls28Betriebssysteme
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  10. CVE-2024-0553

    Hoch · CVSS 7.5EPSS 1,61%Korrektur verfügbar

    Gnutls: incomplete fix for cve-2023-5981

    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 RSA-PSK key exchange, potentially leading to the leakage of sensitive data. CVE-2024-0553 is designated as an incomplete resolution for CVE-2023-5981.

    gnutls28Betriebssysteme
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