Forge: RSA PKCS#1 v1.5 signature forgery via non-canonical DigestInfo encoding

Summary RSASSA-PKCS1-v15 signature verification publicKey.verify with the default scheme, also used by X.509 certificate and PKCS7 verification accepted non-canonical BER encodings of the DigestInfo, such as NULL parameters with content and non-minimal lengths. These leave attacker-controlled byt...

GHSA-6QRW-M8CV-HCXF Forge: RSA PKCS#1 v1.5 signature forgery via non-canonical DigestInfo encoding

Summary RSASSA-PKCS1-v15 signature verification publicKey.verify with the default scheme, also used by X.509 certificate and PKCS7 verification accepted non-canonical BER encodings of the DigestInfo, such as NULL parameters with content and non-minimal lengths. These leave attacker-controlled byt...

Astra Linux – Vulnerability in Node-Elliptic

In the Elliptic package 6.5.6 for Node.js, ECDSA signature malleability occurs because BER-encoded signatures are allowed...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values

A remote attacker can exploit this by providing specially crafted BER/CER/DER-encoded ASN.1 data with a large exponent in the REAL value. When the application subsequently prints, logs, compares, or performs arithmetic on the decoded value, this can cause excessive CPU and memory consumption,...

CVE-2026-63550

The CVE-2026-63550 issue affects the MMS BER decoder, where a boundary-handling flaw in processing certain fields of confirmed-request messages can cause the decoder to advance its read position incorrectly on receiving a BER-encoded element over an established MMS session (TCP port 102). This ma...

CVE-2026-66349

The CVE-2026-66349 entry concerns the MMS server connection handler. A flaw in processing BER-encoded request data occurs when an MMS confirmed request PDU with an extended BER tag is received over an established session, where a missing bounds check can cause the decoder to advance its internal ...

MiracleLinux 9 : opencryptoki-3.26.0-2.el9_8.2 (AXSA:2026-1392:06)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1392:06 advisory. openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects CVE-2026-40253 Tenable has extracted...

CentOS 9 : opencryptoki-3.27.0-1.el9

The remote CentOS Linux 9 host has packages installed that are affected by a vulnerability as referenced in the opencryptoki-3.27.0-1.el9 build changelog. - openCryptoki is a PKCS11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the...

PYSEC-2026-3457

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent, causing float...

RHEL 10 : opencryptoki (RHSA-2026:36697)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:36697 advisory. The opencryptoki packages contain version 2.11 of the PKCS11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These...

openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects

A flaw was found in openCryptoki, a PKCS11 Cryptographic Token Interface Standard library. The BER/DER Basic Encoding Rules/Distinguished Encoding Rules decoding functions in the shared common library do not properly validate attacker-controlled length fields against actual buffer boundaries. Thi...

Moderate: Red Hat Security Advisory: opencryptoki security update

An update for opencryptoki 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 Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is availabl...

RHEL 9 : opencryptoki (RHSA-2026:33519)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:33519 advisory. The opencryptoki packages contain version 2.11 of the PKCS11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These...

SUSE SLES12 Security Update : openCryptoki (SUSE-SU-2026:2685-1)

The remote SUSE Linux SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2026:2685-1 advisory. This update for openCryptoki fixes the following issue: - CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosur...

Security update for openCryptoki

This update for openCryptoki fixes the following issue: CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service bsc1262283. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST...

AlmaLinux 9 : opencryptoki (ALSA-2026:28256)

The remote AlmaLinux 9 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:28256 advisory. openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects CVE-2026-40253 Tenable has extracted the...