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The Hacker News - Cybersecurity News and Analysis: SSH Keys

Hardcoded SSH Key in Cisco Policy Suite Lets Remote Hackers Gain Root Access

Hardcoded SSH Key in Cisco Policy Suite Lets Remote Hackers Gain Root Access

November 04, 2021Ravie Lakshmanan
Cisco Systems has released  security updates  to address vulnerabilities in multiple Cisco products that could be exploited by an attacker to log in as a root user and take control of vulnerable systems. Tracked as  CVE-2021-40119 , the vulnerability has been rated 9.8 in severity out of a maximum of 10 on the CVSS scoring system and stems from a weakness in the SSH authentication mechanism of Cisco Policy Suite. "An attacker could exploit this vulnerability by connecting to an affected device through SSH," the networking major explained in an advisory, adding "A successful exploit could allow the attacker to log in to an affected system as the root user." Cisco said the bug was discovered during internal security testing. Cisco Policy Suite Releases 21.2.0 and later will also automatically create new SSH keys during installation, while requiring a manual process to change the default SSH keys for devices being upgraded from 21.1.0. Also addressed by Cisco a
GitHub Revoked Insecure SSH Keys Generated by a Popular git Client

GitHub Revoked Insecure SSH Keys Generated by a Popular git Client

October 12, 2021Ravie Lakshmanan
Code hosting platform GitHub has  revoked  weak SSH authentication keys that were generated via the GitKraken git GUI client due to a vulnerability in a third-party library that increased the likelihood of duplicated SSH keys. As an added precautionary measure, the Microsoft-owned company also said it's building safeguards to prevent vulnerable versions of GitKraken from adding newly generated weak keys. The problematic dependency, called " keypair ," is an open-source SSH key generation library that allows users to create RSA keys for authentication-related purposes. It has been found to impact  GitKraken  versions 7.6.x, 7.7.x, and 8.0.0, released between May 12, 2021, and September 27, 2021. The flaw — tracked as CVE-2021-41117 (CVSS score: 8.7) — concerns a bug in the pseudo-random number generator used by the library, resulting in the creation of a weaker form of public SSH keys, which, owing to their low entropy — i.e., the measure of randomness — could boost
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