USN-8284-1: GnuTLS vulnerabilities

Joshua Rogers discovered that GnuTLS did not properly handle malformed DTLS handshake fragments in certain cases. A remote attacker could possibly use this issue to obtain sensitive information, or cause a denial of service. CVE-2026-33845 Haruto Kimura, Oscar Reparaz, and Zou Dikai discovered th...

USN-8284-1 gnutls28 vulnerabilities

Joshua Rogers discovered that GnuTLS did not properly handle malformed DTLS handshake fragments in certain cases. A remote attacker could possibly use this issue to obtain sensitive information, or cause a denial of service. CVE-2026-33845 Haruto Kimura, Oscar Reparaz, and Zou Dikai discovered th...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...

crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

A flaw was found in the Go standard library packages crypto/x509 and crypto/tls. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being...

Important: Red Hat Security Advisory: golang-github-openprinting-ipp-usb security update

An update for golang-github-openprinting-ipp-usb is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed...

Astra Linux – Vulnerability in curl

There is a vulnerability in the handling of certificate validation in curl v8.1.0, particularly in how wildcard patterns are matched when listed as “Subject Alternative Name” in TLS server certificates. Curls can be modified to use its own name matching function for TLS, rather than the one...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: X.509: Fixed out-of-bounds access during the parsing of extensions Leo reports a situation where out-of-bounds access occurs during the parsing of a certificate with empty Basic Constraints or Key Usage extensions. This occurs...

Astra Linux – Vulnerability in curl

libcurl provides the CURLOPTCERTINFO option to allow applications to request details about a server’s certificate chain. Due to a faulty function, a malicious server could cause libcurl, built with NSS, to get stuck in an endless busy-loop when attempting to retrieve that information...

Astra Linux – Vulnerability in ca-certificates

Certifi is a curated collection of Root Certificates designed to validate the reliability of SSL certificates and verify the identity of TLS hosts. On December 7, 2022, Certifi removed Root Certificates from “TrustCor” from the root store. These certificates are currently being removed from...

Astra Linux – Vulnerability in Bouncycastle

The Bouncy Castle For Java version prior to 1.74 is affected by an LDAP injection vulnerability. This vulnerability only affects applications that use the LDAP CertStore provided by Bouncy Castle to validate X.509 certificates. During the certificate validation process, Bouncy Castle inserts the...

Astra Linux – Vulnerability in Linux

The Linux kernel up to version 5.8.13 does not properly enforce the Secure Boot Forbidden Signature Database also known as dbx protection mechanism. This issue affects the certs/blacklist.c and certs/systemkeyring.c files...

Astra Linux – Vulnerability in Golang 1.19, Golang 1.23

A certificate with a URI that has an IPv6 address and a zone ID may incorrectly satisfy a URI name constraint that applies to the certificate chain. Certificates containing URIs are not allowed in web PKIs; therefore, this only affects users of private PKIs that use URIs...

Astra Linux – Vulnerability in OpenLDAP

An integer underflow was discovered in OpenLDAP before version 2.4.57, which led to slapd crashes during the Certificate Exact Assertion processing, resulting in a denial of service schemainit.c serialNumberAndIssuerCheck...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: NFS: Check the TLS certificate fields in nfsmatchclient If the TLS security policy is of type RPCXPRTSECTLSX509, then the certserial and privkeyserial fields also need to match, as they define the client’s identity, as presented ...

Astra Linux – Vulnerability in curl

Curl versions 7.63.0 through 7.75.0 include a vulnerability that allows a malicious HTTPS proxy to intercept connections by mishandling TLS 1.3 session tickets. When using an HTTPS proxy and TLS 1.3, libcurl may misinterpret session tickets sent from the HTTPS proxy as those coming from the remot...

crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption

A flaw was found in the crypto/tls component. This vulnerability occurs during Transport Layer Security TLS session resumption when certificate authority CA settings are modified between the initial and resumed handshakes. An attacker could exploit this to bypass certificate validation, allowing ...

SUSE CVE-2025-6037

Vault and Vault Enterprise “Vault” TLS certificate auth method did not correctly validate client certificates when configured with a non-CA certificate as +trusted certificate+|https://developer.hashicorp.com/vault/api-docs/auth/certcertificate. In this configuration, an attacker may be able to...

curl: curl cross-origin HTTPS redirect reuses TLS client certificate for unintended second-origin mTLS authentication

Summary: When curl follows an HTTPS redirect to a different origin under normal -L / CURLOPTFOLLOWLOCATION behavior, it still presents the configured TLS client certificate to the redirected-to HTTPS server. This happens without --location-trusted / CURLOPTUNRESTRICTEDAUTH, even though curl alrea...

crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...