[ASA-202004-11] libssh: denial of service

Arch Linux Security Advisory ASA-202004-11 ========================================== Severity: Medium Date : 2020-04-09 CVE-ID : CVE-2020-1730 Package : libssh Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-1130 Summary ======= The package libssh before version...

Protect

FortiGate models which do not contain and embedded TRNG may suffer from insufficient entropy "seed" in the CTR DRBG random data software generator, in their default configuration...

PT-2020-2220

Name of the Vulnerable Software and Affected Versions libssh versions prior to 0.8.9 libssh versions prior to 0.9.4 Description The issue is related to uncontrolled resource consumption in the libssh library. It can be exploited by a remote attacker to cause a denial of service. The vulnerability...

Client/server denial of service when handling AES-CTR ciphers

The libssh team reports originally reported by Yasheng Yang from Google: A malicious client or server could crash the counterpart implemented with libssh AES-CTR ciphers are used and don't get fully initialized. It will crash when it tries to cleanup the AES-CTR ciphers when closing the connectio...

Nextcloud: Improper confidentiality protection of server-side encryption keys

This vulnerability is related to the Improper integrity protection of server-side encryption keys vulnerability but leverages a different attack vector. While the previous attack broke the confidentiality of encrypted files because the public keys are not integrity-protected, this new attack brea...

Nextcloud: Downgrade encryption scheme and break integrity through known-plaintext attack

The idea behind the Server Side Encryption is that you can move your encrypted files to an external party without that external party being able to to read or modify those files. Some time ago, Nextcloud switched from unauthenticated CFB cipher block mode to authenticated CTR cipher block mode in...

Fedora 28 : libtomcrypt (2018-9d667bdff8)

Fix Side Channel Based ECDSA Key Extraction CVE-2018-12437 PR 408 - Fix potential stack overflow when DER flexi-decoding CVE-2018-0739 PR 373 - Fix two-key 3DES PR 390 - Fix accelerated CTR mode PR 359 - Fix Fortuna PRNG PR 363 - Fix compilation on platforms where cc doesn't point to gcc PR 382 -...

Fedora 27 : libtomcrypt (2018-39e0872379)

Fix Side Channel Based ECDSA Key Extraction CVE-2018-12437 PR 408 - Fix potential stack overflow when DER flexi-decoding CVE-2018-0739 PR 373 - Fix two-key 3DES PR 390 - Fix accelerated CTR mode PR 359 - Fix Fortuna PRNG PR 363 - Fix compilation on platforms where cc doesn't point to gcc PR 382 -...

Researchers Uncover New Attacks Against LTE Network Protocol

If your mobile carrier offers LTE, also known as the 4G network, you need to beware as your network communication can be hijacked remotely. A team of researchers has discovered some critical weaknesses in the ubiquitous LTE mobile device standard that could allow sophisticated hackers to spy on...

restic cryptography

tl;dr: this is not an audit and I take no responsibility for your backups, but I had a quick look at the crypto and I think I'm going to use restic for my personal backups. I keep hearing good things about restic. I am redoing my storage solution, and restic seems to tick all the boxes for my...

ctr.ac.th XSS vulnerability

Open Bug Bounty ID: OBB-236793 Description| Value ---|--- Affected Website:| ctr.ac.th Open Bug Bounty Program:| Create your bounty program now. It's open and free. Vulnerable Application:| Custom Code Vulnerability Type:| XSS Cross Site Scripting / CWE-79 CVSSv3 Score:| 6.1...

Windows Crypto Ransomware in Go: Ransomware

Windows Crypto Ransomware in Go Ransomware is a type of malware that prevents or limits users from accessing their system, either by locking the system’s screen or by locking the users’ files unless a ransom is paid. More modern ransomware families, collectively categorized as crypto-ransomware,...

openSUSE Security Update : XEN (openSUSE-SU-2012:1572-1)

This security update of XEN fixes various bugs and security issues. - Upstream patch 26088-xend-xml-filesize-check.patch - bnc787163 - CVE-2012-4544: xen: Domain builder Out-of- memory due to malicious kernel/ramdisk XSA 25 CVE-2012-4544-xsa25.patch - bnc779212 - CVE-2012-4411: XEN / qemu: guest...

Scientific Linux Security Update : openssh on SL5.x i386/x86_64

CVE-2008-5161 OpenSSH: Plaintext Recovery Attack against CBC ciphers A flaw was found in the SSH protocol. An attacker able to perform a man-in-the-middle attack may be able to obtain a portion of plain text from an arbitrary ciphertext block when a CBC mode cipher was used to encrypt SSH...

CentOS Update for openssh CESA-2009:1287 centos5 i386

The remote host is missing an update for the SPDX-FileCopyrightText: 2011 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 scriptxrefname:"URL",...

tarsnap -- cryptographic nonce reuse

Colin Percival reports: In versions 1.0.22 through 1.0.27 of Tarsnap, the CTR nonce value is not incremented after each chunk is encrypted. The CTR counter is correctly incremented after each 16 bytes of data was processed, but this counter is reset to zero for each new chunk. Note that since the...

RedHat Security Advisory RHSA-2009:1287

The remote host is missing updates announced in advisory RHSA-2009:1287. OpenSSH is OpenBSD's SSH Secure Shell protocol implementation. These packages include the core files necessary for both the OpenSSH client and server. A flaw was found in the SSH protocol. An attacker able to perform a...

Low: Red Hat Security Advisory: openssh security, bug fix, and enhancement update

Updated openssh packages that fix a security issue, a bug, and add enhancements are now available for Red Hat Enterprise Linux 5. This update has been rated as having low security impact by the Red Hat Security Response Team. OpenSSH is OpenBSD's SSH Secure Shell protocol implementation. These...

RHEL 5 : openssh (RHSA-2009:1287)

The remote Redhat Enterprise Linux 5 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2009:1287 advisory. OpenSSH is OpenBSD's SSH Secure Shell protocol implementation. These packages include the core files necessary for both the OpenSSH client and server...

SSH CBC vulnerability

Overview A vulnerability exists in SSH messages that employ CBC mode that may allow an attacker to recover plaintext from a block of ciphertext. Description The Secure Shell SSH is a network protocol that creates a secure channel between two networked devices in order to allow data to be exchange...