Astra Linux – Vulnerability in Golang 1.19, Golang 1.23

During the chain building process, the amount of work performed is not properly limited when a large number of intermediate certificates are passed in as VerifyOptions intermediates. This can lead to a denial of service. This issue affects both direct users of crypto/x509 and users of crypto/tls...

Astra Linux – Vulnerability in gnutls28

A flaw was discovered in GnuTLS. This vulnerability allows for a denial of service attack through excessive CPU usage and memory consumption, caused by specially crafted malicious certificates that contain a large number of name constraints and Subject Alternative Names SANs...

Security update for strongswan

This update for strongswan fixes the following issues: CVE-2026-78123: Undefined Memory Access When Handling PKCS7 Containers bsc1276533. CVE-2026-78124: Memory Leak When Processing Certificates in PKCS7 Containers bsc1276534. CVE-2026-78126: NULL-Pointer Dereference When Handling...

SUSE-SU-2026:4147-1 Security update for strongswan

This update for strongswan fixes the following issues: - CVE-2026-78123: Undefined Memory Access When Handling PKCS7 Containers bsc1276533. - CVE-2026-78124: Memory Leak When Processing Certificates in PKCS7 Containers bsc1276534. - CVE-2026-78126: NULL-Pointer Dereference When Handling...

CVE-2023-32803

The ca-certificates package before ca-certificates-2021.2.50-72 for Amazon Linux 2 AL2 does not properly remove certain TrustCor root certificates from the root store. NOTE: this issue exists because of an incorrect fix for CVE-2022-23491...

CVE-2023-32803

A flaw was found in the ca-certificates package. This issue prevents the proper removal of certain TrustCor root certificates from the root store. A remote attacker could potentially exploit this vulnerability to leverage these unremoved certificates, leading to a compromise of data integrity. Th...

Amazon Linux AMI 2: CVE-2023-32803: Security patch for ca-certificates (Multiple Advisories)

The ca-certificates package before ca-certificates-2021.2.50-72 for Amazon Linux 2 AL2 does not properly remove certain TrustCor root certificates from the root store. NOTE: this issue exists because of an incorrect fix for CVE-2022-23491...

CVE-2023-32803

The ca-certificates package before ca-certificates-2021.2.50-72 for Amazon Linux 2 AL2 does not properly remove certain TrustCor root certificates from the root store. NOTE: this issue exists because of an incorrect fix for CVE-2022-23491...

CVE-2023-32803

The ca-certificates package before ca-certificates-2021.2.50-72 for Amazon Linux 2 AL2 does not properly remove certain TrustCor root certificates from the root store. NOTE: this issue exists because of an incorrect fix for CVE-2022-23491...

EUVD-2023-60651

The ca-certificates package before ca-certificates-2021.2.50-72 for Amazon Linux 2 AL2 does not properly remove certain TrustCor root certificates from the root store. NOTE: this issue exists because of an incorrect fix for CVE-2022-23491...

PT-2026-91047

The ca-certificates package before ca-certificates-2021.2.50-72 for Amazon Linux 2 AL2 does not properly remove certain TrustCor root certificates from the root store. NOTE: this issue exists because of an incorrect fix for CVE-2022-23491...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: nginx (UTSA-2026-091420)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-091420 advisory. ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as...

security-labs

security-labs Worked solutions to a set of hands-on offensive...

CVE-2026-81018

CVE-2026-81018 is a memory leak in the Linux kernel 's platform/x86: think-lmi driver. When multi-certificate support is active, the system authentication object stores ->signature and ->save_signature, which are not freed when the driver is removed. The fix frees these signatures on driver...

MikroTik RouterOS 7.0.x < 7.23.4 / 7.24.x < 7.24.2 X.509 Signature Validation Bypass (CVE-2026-67278)

According to its self-reported version, the remote networking device is running a version of MikroTik RouterOS 7.0.x prior to 7.23.4, or 7.24.x prior to 7.24.2. It is, therefore, affected by a certificate validation vulnerability. MikroTik RouterOS accepts malformed RSA/PKCS1 v1.5 signatures duri...

SUSE-SU-2026:4115-1 Security update for strongswan

This update for strongswan fixes the following issues: - CVE-2026-47895: Double-Free When Destroying Certain Cloned Identities bsc1266360. - CVE-2026-78123: Undefined Memory Access When Handling PKCS7 Containers bsc1276533. - CVE-2026-78124: Memory Leak When Processing Certificates in PKCS7...

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...

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...

USN-8670-3: curl vulnerability

USN-8670-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 26.04 LTS. Original advisory details: Joshua Rogers discovered that curl incorrectly handled reusing connections when client certificate settings changed. This could result in the wrong client...

USN-8670-3 curl vulnerability

USN-8670-1 fixed a vulnerability in curl. This update provides the corresponding update for Ubuntu 26.04 LTS. Original advisory details: Joshua Rogers discovered that curl incorrectly handled reusing connections when client certificate settings changed. This could result in the wrong client...