Encryption 101: ShiOne ransomware case study

In part one of this series, Encryption 101: a malware analyst's primer, we introduced some of the basic encryption concepts used in malware. If you haven't read it, we suggest going back for a review, as it's necessary in order to be able to fully follow part two, our case study. In this study, w...

Available Tools Making Dent in WannaCry Encryption

Tools are beginning to emerge that can be used to start the process of recovering files encrypted by WannaCry on some Windows systems. This takes on extra urgency because today marks one week from the initial outbreak, and files encrypted during that first wave are on the clock and close to being...

OracleVM 3.3 / 3.4 : gnutls (OVMSA-2017-0054)

The remote OracleVM system is missing necessary patches to address critical security updates : - Upgraded to 2.12.23 to incorporate multiple TLS 1.2 fixes 1326389, 1326073, 1323215, 1320982, 1328205, 1321112 - Modified gnutls-serv to accept --sni-hostname 1333521 - Modified gnutls-serv to always...

Alvosec: Alvocrypt uses a cryptographically insecure PRNG.

Dear Alvosec bug bounty team, Summary --- A PRNG is an algorithm used to produce random-looking numbers with certain desirable statistical properties. In order for a PRNG to be cryptographically secure it must be resistant to prediction. The generatepass function in Alvocrypt currently uses...

UBUNTU-CVE-2016-5142

The Web Cryptography API aka WebCrypto implementation in Blink, as used in Google Chrome before 52.0.2743.116, does not properly copy data buffers, which allows remote attackers to cause a denial of service use-after-free or possibly have unspecified other impact via crafted JavaScript code,...

openSUSE: Security Advisory for Security (openSUSE-SU-2016:1211-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2016 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Security update update for MozillaFirefox, mozilla-nss (important)

This update to Mozilla Firefox 46.0 fixes several security issues and bugs boo977333. The following vulnerabilities were fixed: - CVE-2016-2804: Miscellaneous memory safety hazards - MFSA 2016-39 boo977373 - CVE-2016-2806: Miscellaneous memory safety hazards - MFSA 2016-39 boo977375 -...

[SECURITY] Fedora 23 Update: qca-2.1.1-4.fc23

Taking a hint from the similarly-named Java Cryptography Architecture, QCA aims to provide a straightforward and cross-platform crypto API, using Qt datatypes and conventions. QCA separates the API from the implementation, using plugins known as Providers. The advantage of this model is to allow...

Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2016-3502)

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2016-3502 advisory. - KEYS: Don't permit requestkey to construct a new keyring David Howells Orabug: 22373449 CVE-2015-7872 - crypto: add missing crypto module aliases...

CVE-2015-3331

The driverrfc4106decrypt function in arch/x86/crypto/aesni-intelglue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service buffer overflow and system crash or possibly...

Buffer overflow

The driverrfc4106decrypt function in arch/x86/crypto/aesni-intelglue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service buffer overflow and system crash or possibly...

CVE-2015-3331

CVE-2015-3331 affects the Linux kernel up to 3.19.2, where __driver_rfc4106_decrypt in arch/x86/crypto/aesni-intel_glue.c mishandles memory locations for encrypted data, enabling a context-dependent attacker to trigger a buffer overflow via a crypto API call (e.g., with a libkcapi test program us...

CVE-2015-3331

The driverrfc4106decrypt function in arch/x86/crypto/aesni-intelglue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service buffer overflow and system crash or possibly...

CVE-2015-3331

The driverrfc4106decrypt function in arch/x86/crypto/aesni-intelglue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service buffer overflow and system crash or possibly...

UBUNTU-CVE-2015-3331

The driverrfc4106decrypt function in arch/x86/crypto/aesni-intelglue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service buffer overflow and system crash or possibly...

CVE-2015-3331

The driverrfc4106decrypt function in arch/x86/crypto/aesni-intelglue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context-dependent attackers to cause a denial of service buffer overflow and system crash or possibly...

TrueCrypt Audit Cryptanalysis Finds No Backdoors

The results are in from the cryptanalysis phase of the TrueCrypt audit, and they show—nothing. Well, maybe not “nothing,” but certainly no signs of a deliberate backdoor from the NSA or any government entity, fears of which date back to the autumn of 2013, post-Snowden, and ignited talk to have t...

Mandriva Linux Security Advisory : kernel (MDVSA-2015:057)

Multiple vulnerabilities has been found and corrected in the Linux kernel : The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AFALG socket with a parenthesized module template expression in the salgname field, as...

Mandriva Linux Security Advisory : kernel (MDVSA-2015:058)

Multiple vulnerabilities has been found and corrected in the Linux kernel : The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AFALG socket with a module name in the salgname field, a different vulnerability than...

[SECURITY] [DSA 3170-1] linux security update

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3160-1 [email protected] http://www.debian.org/security/ Ben Hutchings February 23, 2015 http://www.debian.org/security/faq -...