Questions tagged [vulnerabilities]
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83
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nmap vulnerability scan reports " smtps on port 465 ssl-dh-params" vulnerability, on Ubuntu 20.04 webserver. How to close the vulnerabilty?
I am running an Ubuntu 20.04 LEMP (Linux, Nginx, MariaDb, PHP) email/web server. I am also doing some nmap vulnerability tests form my MacOS Client machine. On MacOS, I am using Oh My Zsh! with the ...
- 113
0
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2
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144
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nmap vuln script detects vulnerability "Apache byterange filter DoS http-vuln-cve2011-3192" in Ubuntu Webserver, but apache2 not installed on server
I am running an Ubuntu 20.04 LEMP (Linux, Nginx, MariaDb, PHP) webserver. I am also doing some nmap vulnerability tests form my MacOS Client machine. On MacOS, I am using Oh My Zsh! with the nmap ...
- 113
-1
votes
1
answer
22
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Programs and tool to scan open source software for vulnerabilities?
Since my business uses a lot of open source software I was wondering if there was a way to scan for vulnerabilities in the code before we either compile it, ./configure, make etc...
Or as scripting ...
- 127
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148
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Can I redirect one specific url in Nginx for WordPress?
I want to redirect one specific url in Nginx to 'not found' or 'hidden'
url: /wp-admin/load-scripts.php?c=1&load[]=jquery-effects-blind
reason: https://hackerone.com/reports/925425
my codes in ...
- 1
0
votes
0
answers
86
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What is best practice for reporting vulnerability scans?
While reading our logs I came across several requests that seems to be scanning for vulnerabilities on our web app.
2021-09-25T17:32:44.164858+00:00 app[web.1]: 54.39.216.121 - - [25/Sep/2021:17:32:44 ...
- 133
0
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1
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71
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How to fix these vulnerability "" (CVE-2020-2781) ** Upgrade IBM Java to version 7.0.10.65 "" in rhel 7 server
I got this type of vulnerabilities on a rhel server after scan "(CVE-2020-2781) ** Upgrade IBM Java to version 7.0.10.65 Download and apply the upgrade from: https://www.ibm.com/developerworks/...
- 15
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1
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How to fix Weak TLS 1.2 Encryption
I have a requirement to disable below weak TLS ciphers in Windows Server 2016. I tried to reasearch and it says "The Microsoft SCHANNEL team does not support directly manipulating the Group ...
- 11
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votes
1
answer
1k
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Prevent TLS/SSL Birthday attacks on 64-bit block ciphers (SWEET32)
Our recent VA report shows that there are TLS/SSL Birthday attacks on 64-bit block ciphers possible on Kubernetes etcd ports.
Suggested solution is Configure the server to disable support for 3DES ...
0
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2
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48
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Cleaning and upgrading legacy infrastructure
I am a fullstack engineer in a small company, and I am responsible for everything related to technology, from infrastructure, to code.
I arrived a few months ago, and quickly realised that there were ...
- 103
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1
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35
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Does the BootHole Vulnerability Effect Grub1 or Only Grub2?
I've been doing some reading on BootHole to help understand our attack surface and see everything talking about GRUB2, but nothing about GRUB "Legacy" or GRUB1. Wondering if it has tested ...
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0
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43
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How do I secure my PHP forms that communicate with my MySQL Server? [closed]
They are just the basic forms, they take in $input from the form and then store that directly in to the database, there is another form where it takes $input and searches for a hashed match for it.
...
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1
vote
1
answer
98
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Server infected by recent cryptojacking malware but different (?) entry point
One of my servers has been infected by this cryptojacking malware (reporting to the very same IP than in the article).
It seems known for this malware to propagate through some Confluence ...
- 1,195
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79
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How can I determine whether I'm vulnerable to SPECTRE/Meltdown/L1TF on Ubuntu
I'm running Ubuntu 18.04, and I have the following linux-image and intel-microcode packages:
ii linux-image-4.18.0-17-generic 4.18.0-17.18~18.04.1 amd64 Signed ...
- 215
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1
answer
59
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What does ISIC option "-t" mean?
As I already found out, ISIC tool has an option "-t" only for tcpsic or tcpsic6 and it means percentage of packets with wrong checksum.
In tcpsic case my router works fine.
But when Ive been testing ...
0
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1
answer
256
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Still receiving "Message frozen" warnings after fixing Exim CVE-2019-10149 critical vulnerability
After upgrading Exim4 to an official patched version fixing CVE-2019-10149 vulnerability (i.e. exim4_4.89-2+deb9u4) on my Debian stable server, I still get the "Message frozen" warnings about ...
- 1,195
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562
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Sudden unidentified frozen emails with code injection-like recipient
I am suddenly receiving a number of curious "Message frozen" emails from my server (Exim 4.89, Debian stable) :
Message 1hcbPR-0005t1-2r has been frozen (delivery error message).
The sender ...
- 1,195
0
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1
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84
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Is it enough to deactivate RDP to avoid RPD exploits?
I just got word about the newest known vulnerability of the RDP service. 2 Days ago microsoft made a blog post about it and delivered updates. OS wise even for windows xp.
From what I understand the ...
- 103
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0
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24
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Cloud server vulnerability analysis [duplicate]
I have multiple Hetzner cloud servers (Ubuntu 18.04) and I have encrypted the home directory with a +128-bit encryption using cryptsetup/LUKS. The server may only be accessed with SSH or Wireguard. ...
- 9
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1
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51
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Windows Services Vulnerable to Tampering Mitigation
I am testing some software with Microsoft's Attack Surface Analyzer. I took a baseline and after installation scan of the software I am testing. When I create a report it shows that a certain service ...
- 13
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1
answer
143
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KVM, CentOS and CVE-2018-3639
Today news have reached me about specter (https://access.redhat.com/security/cve/cve-2018-3639). I'm running CentOS and kvm infrastructure. Fix is critical and planning to deploy it in few days. I ...
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"Critical" vulnerability rating on OpenVAS 9
I'm using OpenVAS 9 and I noticed that all the vulnerabilities ranking from 7.0 to 10.0 are labeled as "High".
Is there a way to change this behavior, so that all the ones ranking from 9.0 to 10.0 ...
- 150
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1
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Metltdown/Spectre Mitigations on Windows 2008 R2 guest on VmWare ESXi5.5
I do see that I can't enable the Meltdown/Spectre mitigations in Windows Server 2008 R2 is a similar question, but I suppose that the environment differences may justify different remedies.
After ...
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295
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microcode_ctl vs kernel-firmware
I have read that CPU microcode updates are delivered by the kernel-firmware package and microcode_ctl is obsolete: Source #1 Source #2
But i believe this is not true because at the Red Hat Security ...
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42
votes
4
answers
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I updated my CentOS 7 system. Why is Meltdown/Spectre only partially mitigated?
Like many of us, I spent yesterday updating a whole lot of systems to mitigate the Meltdown and Spectre attacks. As I understand it, it is necessary to install two packages and reboot:
kernel-3.10.0-...
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6
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I can't enable the Meltdown/Spectre mitigations in Windows Server 2008 R2
I have installed the patch released today as detailed here and then set the two registry keys as mentioned:
reg add "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory ...
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votes
2
answers
2k
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Meltdown & Spectre - Does patching the guest kernel of an unpatched hypervisor prevent cross-VM memory leaks?
24 hours after the wide scale release of the vulnerabilities, Rackspace is silent about Spectre and Meltdown. They do not have a plan for patching all of their Xen hypervisors. All their newer ...
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41
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Same version after patching wpa_supplicant 2.4
Why is the version number of wpa_supplicant not increased, when I look with 'man wpa_supplicant' at the bottom it says 16 October 2017 but with 'wpa_supplicant -v' I see v2.4, which is especially ...
- 101
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37
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Fetch changelogs for multiple Linux distros?
I'm trying to build a service that can take a distro, package, and a version number, and use that information to check if there's an active CVE out for that tuple.
after some searching, I've found ...
- 103
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43
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Which update scheme is better for an unattended Ubuntu server
I'm in a situation where I have to deploy an ubuntu server for a Client (they do not have a Sysadmin), and it will serve as an HTTP API backend for an app.
The catch is that after the deployment they ...
- 131
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Freebsd: pkg audit spread out in time over different servers
We have several Freebsd servers, where we check daily for vulnerabilities with pkg audit.
Question: Very often, the same vulnerability is reported in some servers only, and then in some others the ...
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2
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66
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Is omitting a PC password within my Win 8.1 LAN constituting a security risk from the outside world?
In my Windows 8.1 LAN consisting of 14 computers, there are several servers which are dedicated to very specific tasks. (For example is the "Save Server" responsible to run a daily batch script, which ...
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4k
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Tomcat Virtual Host to prevent Improper-Input-Handling attack
I'm currently on the process of trying fix a site vulnerability, basically it is one type of the "Improper Input Handling" attack.
Let's say my website is www.mywebsite.com
and there is hacker's ...
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CONNECT Method Allowed in HTTP Server Or HTTP Proxy Server Vulnerability
My setup details:
OS : RHEL7
Webserver : Apache http server(SSL enabled)
AppContainer : NodeJS
Webserver connects to NodeJS via mod_proxy.
I blocked the connect method in apache ...
- 11
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votes
1
answer
220
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How to check if Chromium OS vulnerable to Dirty COW?
I'm running some projects on Kubernetes clusters on the Google Compute Engine. The nodes which form the cluster run on Container-VM, a Chromium OS based image specifically designed for nodes on GCE. ...
google-compute-engine
-1
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2
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182
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Risks of not updating an Ubuntu server on a local network?
Through work I recently came across a server that is used by 10-20 users daily as a sort of web server. It is running Ubuntu 12 and it has not been updated for a very long time it seems. Currently ...
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2
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How do I test my znc's SSL port against various SSL vulnerabilities?
My znc's SSL port is not 443. Various SSL vulnerability tests on the web work only on 443 port.
znc SSL port serves a web server and an IRC bouncer simultaneously.
How can I test whether znc SSL ...
user267805
0
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2
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5k
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Should I expect reception of packets in hping3 --flood?
I'm testing a newly purchased VPS for DDoS vulnerability using hping3.
If I do not use --flood, everything goes fine and I see close to 0% packet loss every time. But If I do use --flood, then the ...
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2
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535
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Upgrade SSL/TLS/Openssl?
I have a requirement to upgrade SSL/TLS/OpenSSL. The server is RHEL 6 Enterprise.
In that server I am going to remove apache, which has not been not in use for a long time. After uninstalling ...
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vulnerability issue in ASP.NET
In our vulnerability report there is one vulnerability which I have mentioned below.
"it was found that the Microsoft ASP.NET validate Request filters could allow a remote attacker to bypass it's ...
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3
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What kinds of security vulnerabilities does providing DNSSEC expose?
I was planning to sign my DNS zone with DNSSEC. My zone, the registrar and my DNS server (BIND9) all support DNSSEC. The only one who doesn't support DNSSEC is my secondary nameserver provider (namely ...
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Fix logjam vulnerability in courier
The site weakdh.org explains how to fix postfix against the weak Diffie-Hellman attack called "logjam".
But don't I have to fix courier too? Or do I have to migrate to dovecot to be logjam-safe?
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How to patch CVE-2015-0235 (GHOST) on Debian Lenny and Squeeze?
There is a right way to patch GHOST on Debian Lenny and Squeeze?
According to this link there are no plans to patch Lenny
https://security-tracker.debian.org/tracker/CVE-2015-0235
Thanks!
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How to patch CVE-2015-0235 (GHOST) on debian 7 (wheezy)?
This vulnerability was found in glibc, see this hacker news post for more info.
As described in the debian bug tracker, the vulnerability was already patched in testing and unstable.
I'd like to ...
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316
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Check my own servers for vulnerabilities [closed]
We are a small early stage startup with not so much money to spend.
We have less than 3 servers that we want to monitor for security issues.
Our website is essentially on one server having:
Ubuntu
...
8
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2
answers
2k
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In response to the OpenSSL Poodle vulnerability should I disable SSLv3?
OpenSSL just announced another new vulnerability in it's memory routines. You can read all about it here: https://www.openssl.org/news/secadv_20141015.txt
The workaround is to disable SSLv3.
Will ...
- 265
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53
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Ways to follow newly discovered vulnerabilities?
I happened to be in a situation where I am in charge for 100+ systems on top of my job as a programmer. Everything we run is Linux (Debian, Ubuntu, Centos) and gladly our sysadmin set everything with ...
- 317
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290
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Http 1.1 protocol detected
I have a CentOS server and we had a Retina security scan. I have no idea how to fix this vulnerability. Can you point me in the right direction? We are running nginx.
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Shellshock - "pkg upgrade bash" doesn't update bash to latest 4.3.25
I'm using FreeBSD-9.1-p5.
My security run output:
Checking for packages with security vulnerabilities:
Database fetched: Wed Sep 24 23:01:24 EDT 2014
bash-4.3.24
pkg info bash:
# pkg info bash
...
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598
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Disinfecting a Supermicro IPMI Board
The IPMI board on one of our servers seems to have become infected - we were hit by the "password in the clear" vulnerability - and it seems to have allowed something to have infected by a bot that ...
1
vote
0
answers
915
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Understanding & Resolving Web Server Exploits
We recently had someone contact our company pointing out that we had numerous security threats that could be used to exploit our systems. They were nice enough to provide a list of these to which we ...
- 650