Exploring the crypt: Analysis of the WannaCrypt ransomware SMB exploit propagation

Note: Read our latest comprehensive report on ransomware: Ransomware 1H 2017 review: Global outbreaks reinforce the value of security hygiene. On May 12, there was a major outbreak of WannaCrypt ransomware. WannaCrypt directly borrowed exploit code from the ETERNALBLUE exploit and the DoublePulsa...

Updated golang packages fix security vulnerability

A carry propagation issue was found in the P-256 implementation for x86-64 in golang CVE-2017-8932...

MGASA-2017-0195 Updated golang packages fix security vulnerability

A carry propagation issue was found in the P-256 implementation for x86-64 in golang CVE-2017-8932...

Petya/NotPetya: What It Is, and What You Can Do Right Now

Just when we thought there were no more tears left in the wake of WannaCry, its time to pull out the tissues yet again for the latest global cyber incident: introducing "NotPetya," the most recent ransomware variant to creep across continents and affect companies across many industries. Please re...

Tenable SecurityCenter OpenSSL 1.0.2 < 1.0.2k Multiple Vulnerabilities (TNS-2017-04)

The Tenable SecurityCenter application installed on the remote host is missing a security patch. It is, therefore, affected by multiple vulnerabilities in the bundled version of OpenSSL : - A carry propagation error exists in the Broadwell-specific Montgomery multiplication procedure when handlin...

H3C / HPE Intelligent Management Center PLAT < 7.3 E0504P04 Multiple Vulnerabilities

The version of HPE Intelligent Management Center iMC PLAT installed on the remote host is prior to 7.3 E0504P04. It is, therefore, affected by multiple vulnerabilities : - A NULL pointer deference flaw exists, specifically in the asn1itemembedd2i function within file crypto/asn1/tasndec.c, when...

Carry Propagation

crypto/elliptic in github.com/golang/go is vulnerable to carry propagation. This carry propagation bug affects the elliptic curve generation in the x86-64 P-256 crypto implementation...

CVE-2017-8932

A carry propagation flaw was found in the implementation of the P-256 elliptic curve in golang. An attacker could possibly use this flaw to extract private keys when static ECDH was used...

Mozilla: Use-after-free in txExecutionState destructor during XSLT processing (MFSA 2017-11, MFSA 2017-12)

A use-after-free vulnerability during XSLT processing due to a failure to propagate error conditions during matching while evaluating context, leading to objects being used when they no longer exist. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 52.1,...

Chrome Universal XSS using exceptions thrown from Object.observe (CVE-2015-1304)

VULNERABILITY DETAILS From /v8/src/object-observe.js: function ObjectObserveobject, callback, acceptList ... var objectObserveFn = %GetObjectContextObjectObserveobject; return objectObserveFnobject, callback, acceptList; From /v8/src/runtime/runtime-observe.cc:...

Mozilla: Use-after-free in txExecutionState destructor during XSLT processing (MFSA 2017-11, MFSA 2017-12)

A use-after-free vulnerability during XSLT processing due to a failure to propagate error conditions during matching while evaluating context, leading to objects being used when they no longer exist. This results in a potentially exploitable crash. This vulnerability affects Thunderbird 52.1,...

MySQL 5.6.x < 5.6.36 Multiple Vulnerabilities (April 2017 CPU) (July 2017 CPU) (Riddle)

The version of MySQL running on the remote host is 5.6.x prior to 5.6.36. It is, therefore, affected by multiple vulnerabilities : - A carry propagation error exists in the OpenSSL component in the Broadwell-specific Montgomery multiplication procedure when handling input lengths divisible by but...

Information Disclosure

OpenSSL is vulnerable to information disclosure. The library contains a carry propagation bug during the montgomery squaring procedure. This makes it easier for a malicious user to obtain sensitive private key information from the Diffie-Hellman Ciphersuite as the attack can be conducted offline...

Information Disclosure

OpenSSL is vulnerable to information disclosure. The library contains a carry propagation bug that can allow a malicious user to gain information on the curve used for encryption during key negotiation using the Elliptic Curve Diffie-Hellman EC-DH Cipher...

Updated openssl packages fix security vulnerability

There is a carry propagation bug in the Broadwell-specific Montgomery multiplication procedure that handles input lengths divisible by, but longer than 256 bits. mong EC algorithms only Brainpool P-512 curves are affected and one presumably can attack ECDH key negotiation CVE-2016-7055. If an...

Carry Propagation

bouncycastle is vulnerable to carry propagation bugs. This bug caused mathematical miscalculations during static Elliptic Curve Diffie Hellman which in rare cases for it to miscalculate elliptic curve scalar multiplication. This allows a malicious user in certain cases to obtain the key...

Windows 10: protection, detection, and response against recent Depriz malware attacks

A few weeks ago, multiple organizations in the Middle East fell victim to targeted and destructive attacks that wiped data from computers, and in many cases rendering them unstable and unbootable. Destructive attacks like these have been observed repeatedly over the years and the Windows Defender...

CVE-2016-7055

There is a carry propagating bug in the Broadwell-specific Montgomery multiplication procedure in OpenSSL 1.0.2 and 1.1.0 before 1.1.0c that handles input lengths divisible by, but longer than 256 bits. Analysis suggests that attacks against RSA, DSA and DH private keys are impossible. This is...

kernel: Slave being first propagated copy causes oops in propagate_mnt

fs/pnode.c in the Linux kernel before 4.5.4 does not properly traverse a mount propagation tree in a certain case involving a slave mount, which allows local users to cause a denial of service NULL pointer dereference and OOPS via a crafted series of mount system calls...

nettle: secp256 calculation bug

The ecc256modq function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than...