Все бюллетени/p9/ALT-PU-2026-8702-2
ALT-PU-2026-8702-2

Обновление пакета gnutls30 в ветке p9

Версия3.6.16-alt11
Задание#420102
Опубликовано2026-06-09
Макс. серьёзностьCRITICAL
Серьёзность:

Закрытые проблемы (22)

BDU:2025-08694
MEDIUM6.5

Уязвимость функции in _gnutls_figure_common_ciphersuite() библиотеки GnuTLS, позволяющая нарушителю повредить память и вызвать отказ в обслуживании

Опубликовано: 2025-07-20Изменено: 2026-05-25
CVSS 3.xСРЕДНЯЯ 6.5
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS 2.0СРЕДНЯЯ 6.1
CVSS:2.0/AV:N/AC:H/Au:N/C:N/I:P/A:C
Ссылки
BDU:2025-11074
HIGH8.2

Уязвимость утилиты certtool библиотеки безопасности транспортного уровня GnuTLS, позволяющая нарушителю вызвать отказ в обслуживании

Опубликовано: 2025-09-13Изменено: 2026-05-25
CVSS 3.xВЫСОКАЯ 8.2
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS 2.0ВЫСОКАЯ 8.5
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:P/A:C
Ссылки
BDU:2025-11076
HIGH8.2

Уязвимость функции asn1_delete_structure() библиотеки безопасности транспортного уровня GnuTLS, позволяющая нарушителю вызвать отказ в обслуживании

Опубликовано: 2025-09-13Изменено: 2026-05-31
CVSS 3.xВЫСОКАЯ 8.2
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS 2.0ВЫСОКАЯ 8.5
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:P/A:C
Ссылки
BDU:2025-15388
HIGH8.4

Уязвимость функции gnutls_pkcs11_token_init() (lib/pkcs11_write.c) библиотеки GnuTLS, позволяющая нарушителю выполнить произвольный код

Опубликовано: 2025-12-07Изменено: 2026-05-25
CVSS 3.xВЫСОКАЯ 8.4
CVSS:3.x/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0ВЫСОКАЯ 7.2
CVSS:2.0/AV:L/AC:L/Au:N/C:C/I:C/A:C
Ссылки
BDU:2026-05048
MEDIUM5.3

Уязвимость библиотеки безопасности транспортного уровня GnuTLS, связанная с алгоритмической сложностью, позволяющая нарушителю вызвать отказ в обслуживании

Опубликовано: 2026-04-12Изменено: 2026-05-25
CVSS 3.xСРЕДНЯЯ 5.3
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
Ссылки
BDU:2026-07116
HIGH7.4

Уязвимость функции compare_strings() библиотеки GnuTLS, позволяющая нарушителю получить несанкционированный доступ к защищаемой информации

Опубликовано: 2026-05-21Изменено: 2026-05-26
CVSS 3.xВЫСОКАЯ 7.4
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0ВЫСОКАЯ 7.1
CVSS:2.0/AV:N/AC:H/Au:N/C:C/I:C/A:N
Ссылки
CVE-2025-14831
MEDIUM5.3

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).

Опубликовано: 2026-02-09Изменено: 2026-06-25
CVSS 3.xСРЕДНЯЯ 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Ссылки
CVE-2025-32988
HIGH8.2

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.

Опубликовано: 2025-07-10Изменено: 2026-06-25
CVSS 3.xВЫСОКАЯ 8.2
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Ссылки
CVE-2025-32990
HIGH8.2

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.

Опубликовано: 2025-07-10Изменено: 2026-06-25
CVSS 3.xВЫСОКАЯ 8.2
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Ссылки
CVE-2025-6395
MEDIUM6.5

A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().

Опубликовано: 2025-07-10Изменено: 2026-06-25
CVSS 3.xСРЕДНЯЯ 6.5
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Ссылки
CVE-2025-9820
MEDIUM4.0

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.

Опубликовано: 2026-01-26Изменено: 2026-06-17
CVSS 3.xСРЕДНЯЯ 4.0
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Ссылки
CVE-2026-33845
CRITICAL9.1

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 service.

Опубликовано: 2026-04-30Изменено: 2026-06-24
CVSS 3.xКРИТИЧЕСКАЯ 9.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Ссылки
CVE-2026-33846
HIGH7.5

A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.

Опубликовано: 2026-05-04Изменено: 2026-06-24
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ссылки
CVE-2026-3833
HIGH7.4

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 exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.

Опубликовано: 2026-04-30Изменено: 2026-06-24
CVSS 3.xВЫСОКАЯ 7.4
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Ссылки
CVE-2026-42009
HIGH7.5

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 sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.

Опубликовано: 2026-05-18Изменено: 2026-06-24
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ссылки
CVE-2026-42010
CRITICAL9.8

A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.

Опубликовано: 2026-05-07Изменено: 2026-06-24
CVSS 3.xКРИТИЧЕСКАЯ 9.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Ссылки
CVE-2026-42011
HIGH7.4

A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.

Опубликовано: 2026-05-07Изменено: 2026-06-24
CVSS 3.xВЫСОКАЯ 7.4
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Ссылки
CVE-2026-42012
HIGH7.1

A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information.

Опубликовано: 2026-05-26Изменено: 2026-06-24
CVSS 3.xВЫСОКАЯ 7.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N
Ссылки
CVE-2026-42013
HIGH8.2

A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.

Опубликовано: 2026-05-26Изменено: 2026-06-24
CVSS 3.xВЫСОКАЯ 8.2
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Ссылки
CVE-2026-42014
MEDIUM6.6

A flaw was found in GnuTLS. The `gnutls_pkcs11_token_set_pin` function, used for changing the Security Officer PIN, can lead to a use-after-free vulnerability. This occurs when an attacker attempts to change the PIN with a NULL old PIN for a token that lacks a protected authentication path.

Опубликовано: 2026-06-15Изменено: 2026-06-24
CVSS 3.xСРЕДНЯЯ 6.6
CVSS:3.x/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
Ссылки
CVE-2026-42015
MEDIUM5.3

A flaw was found in gnutls. An off-by-one error exists in the PKCS#12 bag element bounds check. This vulnerability allows an remote attacker to write past the internal array of a PKCS#12 bag when appending to a bag that already contains 32 elements. This memory corruption could lead to a denial of service (DoS) or potentially other unspecified impacts.

Опубликовано: 2026-05-26Изменено: 2026-06-24
CVSS 3.xСРЕДНЯЯ 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Ссылки
CVE-2026-5260
HIGH8.2

A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.

Опубликовано: 2026-05-26Изменено: 2026-06-24
CVSS 3.xВЫСОКАЯ 8.2
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Ссылки