CVE-2021-40516

WeeChat before 3.2.1 allows remote attackers to cause a denial of service crash via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin...

WeeChat -- Crash when decoding a malformed websocket frame in relay plugin.

The WeeChat project reports: Crash when decoding a malformed websocket frame in relay plugin...

LockFile Ransomware Uses Never-Before Seen Encryption to Avoid Detection

Researchers discovered a novel ransomware emerging on the heels of the ProxyShell vulnerabilities discovery in Microsoft Exchange servers. The threat, dubbed LockFile, uses a unique “intermittent encryption” method as a way to evade detection as well as adopting tactics from previous ransomware...

Backdoor.Win32.Hupigon.abe Unauthenticated Open Proxy

Discovery / credits: Malvuln - malvuln.com c 2021 Original source: https://malvuln.com/advisory/5d7908e7e95d0eb4a7351d24605e62a6.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Hupigon.abe Vulnerability: Unauthenticated Open Proxy Description: The malware listen...

OPENSUSE-SU-2021:1192-1 Security update for tor

This update for tor fixes the following issues: tor 0.4.6.7: Fix a DoS via a remotely triggerable assertion failure boo1189489, TROVE-2021-007, CVE-2021-38385 tor 0.4.6.6: Enable the deterministic RNG for unit tests that covers the address set bloomfilter-based API's tor 0.4.6.5 Add controller...

Patch now! Microsoft Exchange is being attacked via ProxyShell

Last Saturday the Cybersecurity and Infrastructure Security Agency issued an urgent warning that threat actors are actively exploiting three Microsoft Exchange vulnerabilities—CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207. These vulnerabilities can be chained together to remotely execute...

OPENSUSE-SU-2021:1178-1 Security update for tor

This update for tor fixes the following issues: tor 0.4.6.7: Fix a DoS via a remotely triggerable assertion failure boo1189489, TROVE-2021-007, CVE-2021-38385 tor 0.4.6.6: Fix a compilation error with gcc 7, drop tor-0.4.6.5-gcc7.patch Enable the deterministic RNG for unit tests that covers the...

OPENSUSE-SU-2021:1169-1 Security update for tor

This update for tor fixes the following issues: tor 0.4.6.7: Fix a DoS via a remotely triggerable assertion failure boo1189489, TROVE-2021-007, CVE-2021-38385 tor 0.4.6.6: Fix a compilation error with gcc 7, drop tor-0.4.6.5-gcc7.patch Enable the deterministic RNG for unit tests that covers the...

CVE-2021-31399

On 2N Access Unit 2.0 2.31.0.40.5 devices, an attacker can pose as the web relay for a man-in-the-middle attack...

CVE-2021-31399

On 2N Access Unit 2.0 2.31.0.40.5 devices, an attacker can pose as the web relay for a man-in-the-middle attack...

CVE-2021-31399

On 2N Access Unit 2.0 2.31.0.40.5 devices, an attacker can pose as the web relay for a man-in-the-middle attack...

2N Access Unit 信任管理问题漏洞

2N Access Unit is a smart access control reader from the Czech company 2N. A security vulnerability exists in 2N Access Unit, which originates in the 2N Access Unit 2.0,2.31.0.40.5 device, and can be exploited by an attacker to conduct a man-in-the-middle attack disguised as a web relay...

Microsoft Releases Windows Updates to Patch Actively Exploited Vulnerability

Microsoft on Tuesday rolled out security updates to address a total of 44 security issues affecting its software products and services, one of which it says is an actively exploited zero-day in the wild. The update, which is the smallest release since December 2019, squashes seven Critical and 37...

Trojan-Dropper.Win32.Small.fp Unauthenticated Open Proxy

Discovery / credits: Malvuln - malvuln.com c 2021 Original source: https://malvuln.com/advisory/07122dd3b069bbbb445e060c1249d5a2.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Trojan-Dropper.Win32.Small.fp Vulnerability: Unauthenticated Open Proxy Description: The malware...

PetitPotam: Novel Attack Chain Can Fully Compromise Windows Domains Running AD CS

The PetitPotam attack vector was assigned CVE-2021-36942 and patched on August 10, 2021. See the Updates section at the end of this post for more information. Late last month July 2021, security researcher Topotam published a proof-of-concept PoC implementation of a novel NTLM relay attack...

Microsoft Windows Active Directory Certificate Services can allow for AD compromise via PetitPotam NTLM relay attacks

Overview Microsoft Windows Active Directory Certificate Services AD CS by default can be used as a target for NTLM relay attacks, which can allow a domain-joined computer to take over the entire Active Directory. Description PetitPotam is a tool to force Windows hosts to authenticate to other...

Microsoft provides more mitigation instructions for the PetitPotam attack

In a revision of KnowledgeBase article KB5005413, Microsoft has provided more elaborate mitigation instructions for the PetitPotam attacks that were disclosed a week ago. PetitPotam is the name for an attack method using a bug that was found by a security researcher who also published a...

Microsoft Active Directory Certificate Services NTLM Relay (CVE-2021-36942; CVE-2022-26925)

An NTLM relay vulnerability exists in Microsoft Active Directory Certificate Services. A remote attack can coerce Windows hosts to authenticate to other machines via the MS-EFSRPC protocol and obtain its NTLM credential. Successful exploitation could lead to complete takeover of the target domain...

Microsoft Releases Guidance for Mitigating PetitPotam NTLM Relay Attacks

On July 23, Microsoft released KB5005413: Mitigating NTLM Relay Attacks on Active Directory Certificate Services AD CS to address a NTLM Relay Attack named PetitPotam. CISA encourages users and administrators to review KB5005413 and apply the necessary mitigations. This product is provided subjec...

Microsoft Rushes Fix for ‘PetitPotam’ Attack PoC

Microsoft was quick to respond with a fix to an attack dubbed “PetitPotam” that could force remote Windows systems to reveal password hashes that could then be easily cracked. To thwart an attack, Microsoft recommends system administrators stop using the now deprecated Windows NT LAN Manager NTLM...