CVE-2026-59884

A flaw was found in pyasn1, a generic ASN.1 library for Python. The Basic Encoding Rules BER decoder, used by CER and DER codecs, processes long-form tags by accumulating continuation octets without an upper bound. A remote attacker can exploit this by providing a specially crafted input, leading...

opencryptoki security update

3.26.0-3.1 - Resolves: RHEL-171556, Fix possible out-of-bounds access in BER decode functions 3.26.0-3 - Resolves: RHEL-169565, Fix syslog message printing about different CPs...

python-pyasn1: pyasn1: Denial of Service via crafted BER input

A flaw was found in pyasn1, a generic ASN.1 library for Python. The Basic Encoding Rules BER decoder, used by CER and DER codecs, processes long-form tags by accumulating continuation octets without an upper bound. A remote attacker can exploit this by providing a specially crafted input, leading...

Excessive Iteration

Overview Affected versions of this package are vulnerable to Excessive Iteration via the BER decoder, which is also used by the CER and DER codecs, when parsing long-form tag IDs without an upper bound. An attacker can exhaust system resources and potentially trigger unhandled exceptions by...

UBUNTU-CVE-2026-59884

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the BER decoder shared by the CER and DER codecs parses long-form tags by accumulating continuation octets without an upper bound on the tag ID size, allowing a crafted input to force construction of an arbitrarily large integer with C...

CVE-2026-59884

pyasn1 prior to 0.6.4 contains a denial-of-service risk in its BER decoder used by CER/DER codecs: long-form tag IDs can be accumulated without an upper bound, enabling a crafted input to drive CPU usage quadratically and trigger unhandled ValueError paths in Python 3.11+ error formatting. Affect...

ROS-20260714-73-0003

The vulnerability of the ASN.1 PER protocol analyzer and the Wireshark network traffic analyzer is related to uncontrolled recursion. Exploiting this vulnerability can allow attackers to cause service failures...

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...

Low: libtasn1 security update

A library that provides Abstract Syntax Notation One ASN.1, as specified by the X.680 ITU-T recommendation parsing and structures management, and Distinguished Encoding Rules DER, as per X.690 encoding and decoding functions. Security Fixes: libtasn1: libtasn1: Denial of Service via stack-based...

389-ds-base: 389-ds-base: unbounded LDAP controls count in get_ldapmessage_controls_ext() causes CPU and heap amplification (remote DoS)

A flaw was found in 389-ds-base. The getldapmessagecontrolsext function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls...

GHSA-VC8P-8PXG-RFWG ConnectBot SSH Client Library: Excessive allocation and integer overflow in DER private-key parsing

Summary The DER parser used for application-supplied private keys did not safely validate encoded length values before converting them to Int values or allocating arrays. A malformed private-key file could encode a length that overflowed or wrapped around, or request an allocation much larger tha...

ASN.1-Compliant CLDAP Validator

This Metasploit module implements a production-grade CLDAP LDAP over UDP validator that strictly follows ASN.1 BER encoding rules. It builds compliant LDAP search requests for Netlogon verification using carefully structured BER encoders for integers, strings, sequences, and filters. It can be us...

CLDAP Analyzer with ASN.1 BER Encoding and Basic TLV Response Parser

This Python script implements a CLDAP Connectionless LDAP analyzer that builds and sends LDAP CLDAP discovery requests and parses responses using ASN.1 BER encoding and a basic TLV parser. It constructs a structured LDAP search request including DnsDomain, User, and NtVer filters, sends it over U...

CVE-2026-43988

Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the ASN.1/OER parsing pipeline of Vanetza. When processing malformed network packets containing corrupted ASN.1/OER structures e.g., invalid length...

CVE-2026-45615

mouse07410/asn1c is an ASN.1 compiler. In 1.4 and earlier, a memory safety vulnerability was identified in the OER decoding skeleton files generated by asn1c specifically INTEGERoer.c. When parsing a maliciously crafted, zero-length OER payload for a variable-length, non-negative INTEGER type, th...

Out-of-bounds Read

Overview Affected versions of this package are vulnerable to Out-of-bounds Read via the INTEGERdecodeoer function. An attacker can cause a denial of service or trigger incorrect integer interpretation in downstream applications by submitting a maliciously crafted, zero-length OER payload for a...

CVE-2026-44378

A flaw was found in Botan, a C++ cryptography library. A remote attacker could exploit this vulnerability by sending specially crafted Basic Encoding Rules BER data with indefinite length encodings. This could cause quadratic behavior in the parser, leading to a denial of service DoS due to...

CVE-2026-45615

ASN.1 compiler mouse07410/asn1c (1.4 and earlier) contains a memory-safety flaw in the OER decoding skeleton (INTEGER_oer.c). Parsing a crafted, zero-length OER payload for a variable-length, non-negative INTEGER can skip required-byte validation before extracting the MSB, causing a precise 1-byt...

asn1c 安全漏洞

ASN1C is an ASN.1 compiler developed by Lev Walkin as a personal project. Versions of ASN1C prior to 1.4 contained security vulnerabilities. These vulnerabilities stemmed from memory safety issues in the OER decoding framework. When parsing specially crafted zero-length payloads, the decoder did...

Inefficient Algorithmic Complexity

Overview Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity via the BER data parsing process. An attacker can cause excessive resource consumption and service disruption by submitting specially crafted indefinite length encodings. Remediation Upgrade botan to...