Experts Uncover Passive Method to Extract Private RSA Keys from SSH Connections

A new study has demonstrated that it's possible for passive network attackers to obtain private RSA host keys from a vulnerable SSH server by observing when naturally occurring computational faults that occur while the connection is being established. The Secure Shell SSH protocol is a method for...

GnuTLS Security Vulnerabilities

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols. A security vulnerability exists in GnuTLS version 3.6.7-4+deb10u11, which stems from a security flaw in the RSA-PSK ClientKeyExchange, where the response time to a misformatted ciphertext differs from the...

[SECURITY] [DLA 3660-1] gnutls28 security update

Debian LTS Advisory DLA-3660-1 [email protected] https://www.debian.org/lts/security/ Markus Koschany November 22, 2023 https://wiki.debian.org/LTS Package : gnutls28 Version : 3.6.7-4+deb10u11 CVE ID : CVE-2023-5981 Debian Bug : 1056188 A vulnerability was found in GnuTLS, a secure...

RUSTSEC-2023-0071 Marvin Attack: potential key recovery through timing sidechannels

Impact Due to a non-constant-time implementation, information about the private key is leaked through timing information which is observable over the network. An attacker may be able to use that information to recover the key. Patches No patch is yet available, however work is underway to migrate...

abacuz (0.1.1), acmer (>=0.0.1, <=0.0.4) +371 more potentially affected by CVE-2023-49092 via rsa (>=0.1.2, <=0.8.2)

rsa CARGO version =0.1.2, =0.0.1, =0.12.0, =0.5.0, =0.2.0, =0.1.0, =1.0.1, =0.1.0, =0.3.11, =0.2.0, =0.1.0, =0.2.0, =0.11.0, =0.16.0 and more Source cves: CVE-2023-49092 Source advisory: OSV:RUSTSEC-2023-0071...

LockBit Ransomware Exploiting Critical Citrix Bleed Vulnerability to Break In

Multiple threat actors, including LockBit ransomware affiliates, are actively exploiting a recently disclosed critical security flaw in Citrix NetScaler application delivery control ADC and Gateway appliances to obtain initial access to target environments. The joint advisory comes from the U.S...

USN-6499-1: GnuTLS vulnerability

It was discovered that GnuTLS had a timing side-channel when handling certain RSA-PSK key exchanges. A remote attacker could possibly use this issue to recover sensitive information...

Weak Encryption

upydev is vulnerable to Weak Encryption. The vulnerability is due to PKCS 1v1.5 padding used in the RSA algorithm. This could lead to a Bleichenbacher attack...

JSON Web Token (JWT) Algorithm Confusion

fast-jwt is vulnerable to JWT Algorithm Confusion. The vulnerability is caused by a missing validation on publicKeyPemMatcher constant defined in fast-jwt/src/crypto.js which is used to match all common PEM formats for public keys. An attacker can craft a malicious JWT token utilizing the HS256...

JWT Algorithm Confusion

Summary The fast-jwt library does not properly prevent JWT algorithm confusion for all public key types. Details The 'publicKeyPemMatcher' in 'fast-jwt/src/crypto.js' does not properly match all common PEM formats for public keys. To exploit this vulnerability, an attacker needs to craft a...

GHSA-C2FF-88X2-X9PG JWT Algorithm Confusion

Summary The fast-jwt library does not properly prevent JWT algorithm confusion for all public key types. Details The 'publicKeyPemMatcher' in 'fast-jwt/src/crypto.js' does not properly match all common PEM formats for public keys. To exploit this vulnerability, an attacker needs to craft a...

Type confusion

fast-jwt provides fast JSON Web Token JWT implementation. Prior to version 3.3.2, the fast-jwt library does not properly prevent JWT algorithm confusion for all public key types. The 'publicKeyPemMatcher' in 'fast-jwt/src/crypto.js' does not properly match all common PEM formats for public keys. ...

CVE-2023-48223 fast-jwt JWT Algorithm Confusion

fast-jwt provides fast JSON Web Token JWT implementation. Prior to version 3.3.2, the fast-jwt library does not properly prevent JWT algorithm confusion for all public key types. The 'publicKeyPemMatcher' in 'fast-jwt/src/crypto.js' does not properly match all common PEM formats for public keys. ...

CVE-2023-48223 fast-jwt JWT Algorithm Confusion

fast-jwt provides fast JSON Web Token JWT implementation. Prior to version 3.3.2, the fast-jwt library does not properly prevent JWT algorithm confusion for all public key types. The 'publicKeyPemMatcher' in 'fast-jwt/src/crypto.js' does not properly match all common PEM formats for public keys. ...

8Base Group Deploying New Phobos Ransomware Variant via SmokeLoader

The threat actors behind the 8Base ransomware are leveraging a variant of the Phobos ransomware to conduct their financially motivated attacks. The findings come from Cisco Talos, which has recorded an increase in activity carried out by the cybercriminals. "Most of the group's Phobos variants ar...

json-web-token library is vulnerable to a JWT algorithm confusion attack

Summary The json-web-token library is vulnerable to a JWT algorithm confusion attack. Details On line 86 of the 'index.js' file, the algorithm to use for verifying the signature of the JWT token is taken from the JWT token, which at that point is still unverified and thus shouldn't be trusted. To...

CVE-2023-48238

joaquimserafim/json-web-token is a javascript library use to interact with JSON Web Tokens JWT which are a compact URL-safe means of representing claims to be transferred between two parties. Versions prior to 4.0.0 are vulnerable to a JWT algorithm confusion attack. On line 86 of the 'index.js'...

CVE-2023-48238 JWT Algorithm Confusion in json-web-token library

joaquimserafim/json-web-token is a javascript library use to interact with JSON Web Tokens JWT which are a compact URL-safe means of representing claims to be transferred between two parties. Versions prior to 4.0.0 are vulnerable to a JWT algorithm confusion attack. On line 86 of the 'index.js'...

CVE-2023-48238 JWT Algorithm Confusion in json-web-token library

joaquimserafim/json-web-token is a javascript library use to interact with JSON Web Tokens JWT which are a compact URL-safe means of representing claims to be transferred between two parties. Versions prior to 4.0.0 are vulnerable to a JWT algorithm confusion attack. On line 86 of the 'index.js'...

A deep dive into Phobos ransomware, recently deployed by 8Base group

Cisco Talos has recently observed an increase in activity conducted by 8Base, a ransomware group that uses a variant of the Phobos ransomware and other publicly available tools to facilitate their operations. Most of the groups Phobos variants are distributed by SmokeLoader, a backdoor trojan. Th...