Crypto Leaders: 'Exceptional Access' Will Undo Security

A powerhouse baker’s dozen of cryptography experts and pioneers have released a paper explaining the potential legal and ethical issues relative to the government’s continued insistence on access to cryptographic keys that secure communication over the Internet. The paper, called “Keys Under...

DEBIAN-CVE-2015-2721

Mozilla Network Security Services NSS before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle...

UBUNTU-CVE-2015-2721

Mozilla Network Security Services NSS before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle...

CVE-2015-2721

Mozilla Network Security Services NSS before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle...

NSS incorrectly permits skipping of ServerKeyExchange — Mozilla

Security researcher Karthikeyan Bhargavan reported an issue in Network Security Services NSS where the client allows for a ECDHEECDSA exchange where the server does not send its ServerKeyExchange message instead of aborting the handshake. Instead, the NSS client will take the EC key from the ECDS...

NSS: incorrectly permited skipping of ServerKeyExchange (MFSA 2015-71)

It was found that NSS permitted skipping of the ServerKeyExchange packet during a handshake involving ECDHE Elliptic Curve Diffie-Hellman key Exchange. A remote attacker could use this flaw to bypass the forward-secrecy of a TLS/SSL connection...

Microsoft Brings HSTS to Windows 7 and 8.1

In the midst of a relatively light Patch Tuesday, Microsoft yesterday introduced an extra measure of security for users running Internet Explorer 11 on Windows 7 and Windows 8.1 machines: HSTS. Short for HTTP Strict Transport Security, HSTS is a browser header that forces any sessions sent over...

Microsoft Brings Perfect Forward Secrecy to Windows

Microsoft yesterday added four cryptographic cipher suites to its default priority ordering list in Windows, a move that brings Perfect Forward Secrecy to the operating system. Update 3042058 is available for now only on the Microsoft Download Center, affording users the opportunity to test the...

Juniper NSM < 2012.2R11 Multiple OpenSSL Vulnerabilities (JSA10679) (FREAK)

The remote host is running a version of NSM Network and Security Manager Server that is prior to 2012.2R11. It is, therefore, affected by multiple vulnerabilities related to OpenSSL : - A NULL pointer dereference flaw exists when the SSLv3 option isn't enabled and an SSLv3 ClientHello is received...

Juniper Junos Multiple OpenSSL Vulnerabilities (JSA10679) (FREAK)

According to its self-reported version number, the remote Juniper Junos device is affected by the following vulnerabilities related to OpenSSL : - A NULL pointer dereference flaw exists when the SSLv3 option isn't enabled and an SSLv3 ClientHello is received. This allows a remote attacker, using ...

UBUNTU-CVE-2015-2325

The compilebranch function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code, cause a denial of service out-of-bounds heap read and crash, or possibly have other unspecified impact via a regular expression with a group containing a forward reference repeated a large...

CVE-2015-2325

The compilebranch function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code, cause a denial of service out-of-bounds heap read and crash, or possibly have other unspecified impact via a regular expression with a group containing a forward reference repeated a large...

UBUNTU-CVE-2015-2326

The pcrecompile2 function in PCRE before 8.37 allows context-dependent attackers to compile incorrect code and cause a denial of service out-of-bounds read via regular expression with a group containing both a forward referencing subroutine call and a recursive back reference, as demonstrated by...

Common Reverse Shells

If you’re lucky enough to find a remote command execution vulnerability, you’ll more often than not want to connect back to your attacking machine to leverage an interactive shell. Below are a collection of reverse shells that use commonly installed programming languages, or commonly installed...

Debian DLA-132-1 : openssl security update (FREAK)

Multiple vulnerabilities have been discovered in OpenSSL, a Secure Sockets Layer toolkit. The Common Vulnerabilities and Exposures project identifies the following issues : CVE-2014-3570 Pieter Wuille of Blockstream reported that the bignum squaring BNsqr may produce incorrect results on some...

The Ghost vulnerability the GHOST remote using the EXP-bug warning-the black bar safety net

This article demonstrates one of the Ghost vulnerability the GHOST of EXP, this EXP is Metasploit a module. This Metasploit module can be remote exploit CVE-2 0 1 5-0 2 3 5 out of glibc library gethostbyname function heap overflow vulnerability vulnerability, the goal is to run the Exim mail...

VPN daemon written in Go: GoVPN

GoVPN is simple secure virtual private network daemon. It uses Diffie-Hellman Encrypted Key Exchange DH-EKE for mutual zero-knowledge peers authentication and authenticated encrypted data transport. It is written entirely in Go programming language . All packets captured on a network interface ar...

Signal 2.0 — Free iPhone App for Encrypted Calls and Texts

An open source software group, Open Whisper Systems, has announced the release of Signal 2.0 — the second version of its free and open source messaging application for iPhone and iPad users. Signal app is specifically designed to make secure and easy-to-use encrypted voice calling. But that’s wha...

F5 Networks BIG-IP : OpenSSL vulnerability (SOL16126)

The ssl3getkeyexchange function in s3clnt.c in OpenSSL before 0.9.8zd, 1.0.0 before 1.0.0p, and 1.0.1 before 1.0.1k allows remote SSL servers to conduct ECDHE-to-ECDH downgrade attacks and trigger a loss of forward secrecy by omitting the ServerKeyExchange message. C Tenable Network Security, Inc...

Reverse Shells With Terminal Support: revsh

revsh is a tool for establishing reverse shells with terminal support, reverse VPNs for advanced pivoting Pivoting , as well as arbitrary data tunneling. A reverse shell is a network connection that grants shell access to a remote host. As opposed to other remote login tools such as telnet and ss...