Solving Ad-hoc Problems with Hex-Rays API

Introduction IDA Pro is the de facto standard when it comes to binary reverse engineering. Besides being a great disassembler and debugger, it is possible to extend it and include a powerful decompiler by purchasing an additional license from Hex-Rays. The ability to switch between disassembled a...

Solving Ad-hoc Problems with Hex-Rays API

Introduction IDA Pro is the de facto standard when it comes to binary reverse engineering. Besides being a great disassembler and debugger, it is possible to extend it and include a powerful decompiler by purchasing an additional license from Hex-Rays. The ability to switch between disassembled a...

UBUNTU-CVE-2018-0739

Constructed ASN.1 types with a recursive definition such as can be found in PKCS7 could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so...

Microsoft Edge Chakra ParseCatch Type Confusion (CVE-2017-11764)

A type confusion vulnerability exists in Microsoft Edge Chakra JavaScript Engine. The vulnerability is due to a lack of validation in the ParseCatch method which results in the generation on a malformed Abstract Syntax Tree AST. A remote attacker could exploit this vulnerability by enticing the...

ASN1C 'asn1f_lookup_symbol_impl' function denial of service vulnerability

ASN1C is an open source ASN.1 Abstract Syntax Notation compiler that enables a variety of codecs such as BER, DER and PER. A security vulnerability exists in the 'asn1flookupsymbolimpl' function in the asn1fixretrieve.c file of libasn1fix.a in ASN1C version 0.9.28. A remote attacker can exploit...

GNU Libtasn1 '_asn1_check_identifier' Denial of Service Vulnerability

Libtasn1 is the ASN.1 library used by GnuTLS. A denial of service vulnerability exists in GNU Libtasn1 'asn1checkidentifier'. The vulnerability stems from the asn1checkidentifier function reading specially designed input, which can be exploited by an attacker to cause a remote denial of service...

DEBIAN-CVE-2017-10790

The asn1checkidentifier function in GNU Libtasn1 through 4.12 causes a NULL pointer dereference and crash when reading crafted input that triggers assignment of a NULL value within an asn1node structure. It may lead to a remote denial of service attack...

UBUNTU-CVE-2017-10790

The asn1checkidentifier function in GNU Libtasn1 through 4.12 causes a NULL pointer dereference and crash when reading crafted input that triggers assignment of a NULL value within an asn1node structure. It may lead to a remote denial of service attack...

openssl: ASN.1 BIO handling of large amounts of data

A denial of service flaw was found in the way OpenSSL parsed certain ASN.1-encoded data from BIO OpenSSL's I/O abstraction inputs. An application using OpenSSL that accepts untrusted ASN.1 BIO input could be forced to allocate an excessive amount of data...

openssl: Memory corruption in the ASN.1 encoder

A flaw was found in the way OpenSSL encoded certain ASN.1 data structures. An attacker could use this flaw to create a specially crafted certificate which, when verified or re-encoded by OpenSSL, could cause it to crash, or execute arbitrary code using the permissions of the user running an...

openssl: Memory corruption in the ASN.1 encoder

A flaw was found in the way OpenSSL encoded certain ASN.1 data structures. An attacker could use this flaw to create a specially crafted certificate which, when verified or re-encoded by OpenSSL, could cause it to crash, or execute arbitrary code using the permissions of the user running an...

openssl: ASN.1 BIO handling of large amounts of data

A denial of service flaw was found in the way OpenSSL parsed certain ASN.1-encoded data from BIO OpenSSL's I/O abstraction inputs. An application using OpenSSL that accepts untrusted ASN.1 BIO input could be forced to allocate an excessive amount of data...

Internet Bug Bounty: Multiple use after frees in obj2ast_* methods

Multiple UAFs in Python AST API. link to bugtracker...

openssl: Memory corruption in the ASN.1 encoder

A flaw was found in the way OpenSSL encoded certain ASN.1 data structures. An attacker could use this flaw to create a specially crafted certificate which, when verified or re-encoded by OpenSSL, could cause it to crash, or execute arbitrary code using the permissions of the user running an...

USN-2976-1 linux-lts-utopic vulnerability

Philip Pettersson discovered that the Linux kernel's ASN.1 DER decoder did not properly process certificate files with tags of indefinite length. A local unprivileged attacker could use this to cause a denial of service system crash or possibly execute arbitrary code with administrative privilege...

openssl: ASN.1 BIO handling of large amounts of data

A denial of service flaw was found in the way OpenSSL parsed certain ASN.1-encoded data from BIO OpenSSL's I/O abstraction inputs. An application using OpenSSL that accepts untrusted ASN.1 BIO input could be forced to allocate an excessive amount of data...

OpenSSL ASN.1 BIO Memory Overallocation Vulnerability

OpenSSL is a general-purpose open source cryptographic library that implements Secure Sockets Layer and Secure Transport Layer protocols and can support a variety of cryptographic algorithms, including symmetric ciphers, hashing algorithms, secure hashing algorithms, and so on. A memory...

OpenSSL EBCDIC Out-of-Bounds Read Vulnerability

OpenSSL is a general-purpose open source cryptographic library that implements Secure Sockets Layer and Secure Transport Layer protocols and can support a variety of cryptographic algorithms, including symmetric ciphers, hashing algorithms, secure hashing algorithms, and so on. An out-of-bounds...

Wireshark ASN.1 BER parser denial of service vulnerability (CNVD-2016-02775)

Wireshark formerly known as Ethereal is a suite of network packet analysis software developed by the Wireshark team. A denial of service vulnerability exists in the epan/dissectors/packet-ber.c file in the ASN.1 BER parser in Wireshark versions 1.12.x prior to 1.12.10, and versions 2.x prior to...

Mozilla Network Security Services Buffer Overflow Vulnerability

Mozilla Network Security Services is a library that provides cross-platform support for SSL, S/MIME and other Internet security standards. A buffer overflow vulnerability in the parsing of ASN.1 structures by Mozilla Network Security Services could be exploited by a remote attacker to construct a...