The Curious Case of WebCrypto Diffie-Hellman on Firefox - Small Subgroups Key Recovery Attack on DH

tl;dr Mozilla Firefox prior to version 72 suffers from Small Subgroups Key Recovery Attack on DH in the WebCrypto 's API. The Firefox's team fixed the issue removing completely support for DH over finite fields that is not in the WebCrypto standard. If you find this interesting read further below...

CVE-2018-10845

It was found that GnuTLS's implementation of HMAC-SHA-384 was vulnerable to a Lucky Thirteen-style attack. A remote attacker could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets...

Possible Insecure Deserialization in Extbase Request Handling

It has been discovered that request handling in Extbase can be vulnerable to insecure deserialization. User submitted payload has to be signed with a corresponding HMAC-SHA1 using the sensitive TYPO3 encryptionKey as secret - invalid or unsigned payload is not deserialized...

SUSE SLED12 / SLES12 Security Update : strongswan (SUSE-SU-2019:3266-1)

This update for strongswan provides the following fixes : Security issues fixed : CVE-2018-5388: Fixed a buffer underflow which may allow to a remote attacker with local user credentials to resource exhaustion and denial of service while reading from the socket bsc1094462. CVE-2018-10811: Fixed a...

Magic: HTTP SMUGGLING EXPOSED HMAC/DOS

HTTP SMUGGLING EXPOSED HMAC / DOS Using the transfer-encoding header and following it with a zero. The back end leaked the hmac the back end reflected back the hmac key encryption type, and a lot of details. Further testing had it reflect more headers. http-smuggling-dashboard-fortmatic.png we wi...

openSUSE: Security Advisory for strongswan (openSUSE-SU-2019:2594-1)

The remote host is missing an update for the Copyright C 2019 Greenbone Networks GmbH 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-or-later This program is free software; you can...

OPENSUSE-SU-2019:2594-1 Security update for strongswan

This update for strongswan fixes the following issues: Security issues fixed: - CVE-2018-5388: Fixed a buffer underflow which may allow to a remote attacker with local user credentials to resource exhaustion and denial of service while reading from the socket bsc1094462. - CVE-2018-10811: Fixed a...

dovecot security and bug fix update

1:2.2.36-10 - fix CVE-2019-11500: IMAP protocol parser does not properly handle NUL byte when scanning data in quoted strings, leading to out of bounds heap memory writes 1741788 1:2.2.36-9 - reset errno before iterating through users 1630410 1:2.2.36-8 - fix CVE-2019-3814: improper certificate...

Ruby on Rails: The authenticity_token can be reversed and used to forge valid per_form_csrf_tokens for arbitrary routes

When performcsrftokens is set to true, each form should protected against CSRF with a unique token that is not predictable by an attacker. Theperformcsrftoken is generated using a HMAC SHA-256 using a key that is exposed in a reversed authenticitytoken. The authenticitytoken is a Base64 encoding ...

Mozilla: Stack buffer overflow in HKDF output

A flaw was discovered in both Firefox and Thunderbird where 4 bytes of a HMAC output could be written past the end of a buffer stored on the memory stack. This could allow an attacker to execute arbitrary code or lead to a crash. This flaw can be exploited over the network...

UBUNTU-CVE-2019-11759

An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash. This vulnerability affects Firefox 70, Thunderbird 68.2, and Firefox ESR 68.2...

Security Bulletin: Multiple Security Vulnerabilities in OpenSSL affect IBM Netezza Analytics

Summary OpenSSL is used by IBM Netezza Analytics. IBM Netezza Analytics has addressed the applicable CVEs. Vulnerability Details CVEID: CVE-2016-6304 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by multiple memory leaks in t1lib.c during session renegotiation. By sending an...

[SECURITY] [DSA 4539-3] openssl regression update

------------------------------------------------------------------------- Debian Security Advisory DSA-4539-3 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso October 13, 2019 https://www.debian.org/security/faq -...

CVE-2016-6302

An integer underflow flaw leading to a buffer over-read was found in the way OpenSSL parsed TLS session tickets. A remote attacker could use this flaw to crash a TLS server using OpenSSL if it used SHA-512 as HMAC for session tickets...

Timing attack on HMAC signature comparison in Apache Tapestry

The code which checks HMAC in form submissions used String.equals for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison...

CVE-2019-10071

The code which checks HMAC in form submissions used String.equals for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison...

CVE-2019-10071

The code which checks HMAC in form submissions used String.equals for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison...

Code injection

The code which checks HMAC in form submissions used String.equals for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison...

CVE-2019-10071

The code which checks HMAC in form submissions used String.equals for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison...

CVE-2019-10071

CVE-2019-10071 is an Apache Tapestry timing-attack vulnerability caused by using String.equals() to compare HMACs in form submissions. This creates a timing side channel that could let an attacker estimate the correct signature for a payload, potentially enabling remote code execution. Affected v...