Episodios

  • ANS Stormcast Friday, April 25th: Image Steganography; SAP Netweaver Exploited (#)

    ANS Stormcast Friday, April 25th: Image Steganography; SAP Netweaver Exploited (#)
    Apr 27 2025
    ANS Stormcast Friday, April 25th: Image Steganography; SAP Netweaver Exploited Example of a Payload Delivered Through Steganography Xavier and Didier published two diaries this weekend, building on each other. First, Xavier showed an example of an image being used to smuggle an executable past network defenses, and second, Didier showed how to use his tools to extract the binary. https://isc.sans.edu/diary/Example%20of%20a%20Payload%20Delivered%20Through%20Steganography/31892 SAP Netweaver Exploited CVE-2025-31324 An arbitrary file upload vulnerability in SAP’s Netweaver product is actively exploited to upload webshells. Reliaquest discovered the issue. Reliaquest reports that they saw it being abused to upload the Brute Ratel C2 framework. Users of Netweaver must turn off the developmentserver alias and disable visual composer, and the application was deprecated for about 10 years. SAP has released an emergency update for the issue. https://reliaquest.com/blog/threat-spotlight-reliaquest-uncovers-vulnerability-behind-sap-netweaver-compromise/ https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/ Any.Run Reports False Positive Uploads Due to false positives caused by MS Defender XDR flagging Adobe Acrobat Cloud links as malicious, many users of Any.Run’s free tier uploaded confidential documents to Any.Run. Anyrun blocked these uploads for now but reminded users to be cautious about what documents are being uploaded. https://x.com/anyrun_app/status/1915429758516560190 keywords: any.run; adobe; xdr; microsoft; sap; netweaver; steganography
    Más Menos
    8 m
  • SANS Stormcast Friday, April 25th: SMS Gateway Scans; Comvault Exploit; Patch Window Shrinkage; More inetpub issues; (#)

    SANS Stormcast Friday, April 25th: SMS Gateway Scans; Comvault Exploit; Patch Window Shrinkage; More inetpub issues; (#)
    Apr 24 2025
    SANS Stormcast Friday, April 25th: SMS Gateway Scans; Comvault Exploit; Patch Window Shrinkage; More inetpub issues; Attacks against Teltonika Networks SMS Gateways Attackers are actively scanning for SMS Gateways. These attacks take advantage of default passwords and other commonly used passwords. https://isc.sans.edu/diary/Attacks%20against%20Teltonika%20Networks%20SMS%20Gateways/31888 Commvault Vulnerability CVE-2205-34028 Commvault, about a week ago, published an advisory and a fix for a vulnerability in its backup software. watchTowr now released a detailed writeup and exploit for the vulnerability https://labs.watchtowr.com/fire-in-the-hole-were-breaching-the-vault-commvault-remote-code-execution-cve-2025-34028/ Exploitation Trends Q1 2025 Vulncheck published a summary of exploitation trends, pointing out that about a quarter of vulnerabilities are exploited a day after a patch is made available. https://vulncheck.com/blog/exploitation-trends-q1-2025 inetpub directory issues The inetpub directory introduced by Microsoft in its April patch may lead to a denial of service against applying patches on Windows if an attacker can create a junction for that location pointing to an existing system binary like Notepad. https://doublepulsar.com/microsofts-patch-for-cve-2025-21204-symlink-vulnerability-introduces-another-symlink-vulnerability-9ea085537741 keywords: inetpub; vulncheck; patches; watchTowr; teltonika; sms
    Más Menos
    7 m
  • SANS Stormcast Thursday, April 24th: Honeypot iptables Maintenance; XRPL.js Compromise; Erlang/OTP SSH Vuln affecting Cisco (#)

    SANS Stormcast Thursday, April 24th: Honeypot iptables Maintenance; XRPL.js Compromise; Erlang/OTP SSH Vuln affecting Cisco (#)
    Apr 23 2025
    SANS Stormcast Thursday, April 24th: Honeypot iptables Maintenance; XRPL.js Compromise; Erlang/OTP SSH Vuln affecting Cisco Honeypot Iptables Maintenance and DShield-SIEM Logging In this diary, Jesse is talking about some of the tasks to maintain a honeypot, like keeping filebeats up to date and adjusting configurations in case your dynamic IP address changes https://isc.sans.edu/diary/Honeypot%20Iptables%20Maintenance%20and%20DShield-SIEM%20Logging/31876 XRPL.js Compromised An unknown actor was able to push malicious updates of the XRPL.js library to NPM. The library is officially recommended for writing Riple (RPL) cryptocurrency code. The malicious library exfiltrated secret keys to the attacker https://www.aikido.dev/blog/xrp-supplychain-attack-official-npm-package-infected-with-crypto-stealing-backdoor https://github.com/XRPLF/xrpl.js/security/advisories/GHSA-33qr-m49q-rxfx Cisco Equipment Affected by Erlang/OTP SSH Vulnerability Cisco published an advisory explaining which of its products are affected by the critical Erlang/OTP SSH library vulnerability https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-erlang-otp-ssh-xyZZy keywords: SIEM, filebeats, iptables, honeypot; ripl; xrp; supply chain; npm; erlang/otp; erlang; ssh;
    Más Menos
    6 m
  • SANS Stormcast Wednesday, April 23rd: More xorsearch Updates; DKIM Replay Attack; SSL.com Vulnerability Fixed (#)

    SANS Stormcast Wednesday, April 23rd: More xorsearch Updates; DKIM Replay Attack; SSL.com Vulnerability Fixed (#)
    Apr 22 2025
    SANS Stormcast Wednesday, April 23rd: More xorsearch Updates; DKIM Replay Attack; SSL.com Vulnerability Fixed xorsearch.py: Ad Hoc YARA Rules Adhoc YARA rules allow for easy searches using command line arguments without having to write complete YARA rules for simple use cases like string and regex searches https://isc.sans.edu/diary/xorsearch.py%3A%20%22Ad%20Hoc%20YARA%20Rules%22/31856 Google Spoofed via DKIM Replay Attack DKIM replay attacks are a known issue where the attacker re-uses a prior DKIM signature. This will work as long as the headers signed by the signature are unchanged. Recently, this attack has been successful against Google. https://easydmarc.com/blog/google-spoofed-via-dkim-replay-attack-a-technical-breakdown/ SSL.com E-Mail Validation Bug SSL.com did not properly verify which domain a particular email address is authorized to receive certificates for. This could have been exploited against webmail providers. https://bugzilla.mozilla.org/show_bug.cgi?id=1961406 keywords: dmarc, dkim; google; replay; ad-hoc; yara; xorsearch
    Más Menos
    6 m
  • SANS Stormcast Tuesday, April 22nd: Phishing via Google; ChatGPT Fingerprint; Asus AI Cloud Vuln; PyTorch RCE (#)

    SANS Stormcast Tuesday, April 22nd: Phishing via Google; ChatGPT Fingerprint; Asus AI Cloud Vuln; PyTorch RCE (#)
    Apr 21 2025
    SANS Stormcast Tuesday, April 22nd: Phishing via Google; ChatGPT Fingerprint; Asus AI Cloud Vuln; PyTorch RCE It's 2025, so why are malicious advertising URLs still going strong? Phishing attacks continue to take advantage of Google’s advertising services. Sadly, this is still the case for obviously malicious links, even after various anti-phishing services flag the URL. https://isc.sans.edu/diary/It%27s%202025...%20so%20why%20are%20obviously%20malicious%20advertising%20URLs%20still%20going%20strong%3F/31880 ChatGPT Fingerprinting Documents via Unicode ChatGPT apparently started leaving fingerprints in texts, which it creates by adding invisible Unicode characters like non-breaking spaces. https://www.rumidocs.com/newsroom/new-chatgpt-models-seem-to-leave-watermarks-on-text Asus AI Cloud Security Advisory Asus warns of a remote code execution vulnerability in its routers. The vulnerability is related to the AI Cloud feature. If your router is EoL, disabling the feature will mitigate the vulnerability https://www.asus.com/content/asus-product-security-advisory/ PyTorch Vulnerability PyTorch fixed a remote code execution vulnerability exploitable if a malicious model was loaded. This issue was exploitable even with the “weight_only=True" setting selected https://github.com/pytorch/pytorch/security/advisories/GHSA-53q9-r3pm-6pq6 keywords: pytorch; ai cloud; asus; phishing; google
    Más Menos
    6 m
  • ANS Stormcast Monday, April 21st: MSFT Entra Lockouts; Erlang/OTP SSH Exploit; Sonicwall Exploit; bubble.io bug (#)

    ANS Stormcast Monday, April 21st: MSFT Entra Lockouts; Erlang/OTP SSH Exploit; Sonicwall Exploit; bubble.io bug (#)
    Apr 21 2025
    ANS Stormcast Monday, April 21st: MSFT Entra Lockouts; Erlang/OTP SSH Exploit; Sonicwall Exploit; bubble.io bug Microsoft Entra User Lockout Multiple organizations reported widespread alerts and account lockouts this weekend from Microsoft Entra. The issue is caused by a new feature Microsoft enabled. This feature will lock accounts if Microsoft believes that the password for the account was compromised. https://www.bleepingcomputer.com/news/microsoft/widespread-microsoft-entra-lockouts-tied-to-new-security-feature-rollout/ https://learn.microsoft.com/en-us/entra/identity/authentication/feature-availability Erlang/OTP SSH Exploit An exploit was published for the Erlang/OTP SSH vulnerability. The vulnerability is easy to exploit, and the exploit and a Metasploit module allow for easy remote code execution. https://github.com/exa-offsec/ssh_erlangotp_rce/blob/main/ssh_erlangotp_rce.rb Sonicwall Exploited An older command injection vulnerability is now exploited on Sonicwall devices after initially gaining access by brute-forcing credentials. https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022 Unpatched Vulnerability in Bubble.io An unpatched vulnerability in the no-code platform bubble.io can be used to access any project hosted on the site. https://github.com/demon-i386/pop_n_bubble keywords: bubble; no-code; bubble.io; sonicwall; ssh; erlang; microsoft; entra
    Más Menos
    8 m
  • SANS Stormcast Friday, April 18th: Remnux Cloud Environment; Erlang/OTP SSH Vuln; Brickstorm Backdoor Analysis; GPT 4.1 Safety Controversy (#)

    SANS Stormcast Friday, April 18th: Remnux Cloud Environment; Erlang/OTP SSH Vuln; Brickstorm Backdoor Analysis; GPT 4.1 Safety Controversy (#)
    Apr 17 2025
    SANS Stormcast Friday, April 18th: Remnux Cloud Environment; Erlang/OTP SSH Vuln; Brickstorm Backdoor Analysis; GPT 4.1 Safety Controversy RedTail: Remnux and Malware Management A description showing how to set up a malware analysis in the cloud with Remnux and Kasm. RedTail is a sample to illustrate how the environment can be used. https://isc.sans.edu/diary/RedTail%2C%20Remnux%20and%20Malware%20Management%20%5BGuest%20Diary%5D/31868 Critical Erlang/OTP SSH Vulnerability Researchers identified a critical vulnerability in the Erlang/OTP SSH library. Due to this vulnerability, SSH servers written in Erlang/OTP allow arbitrary remote code execution without prior authentication https://www.openwall.com/lists/oss-security/2025/04/16/2 Brickstorm Analysis An analysis of a recent instance of the Brickstorm backdoor. This backdoor used to be more known for infecting Linux systems, but now it also infects Windows. https://www.nviso.eu/blog/nviso-analyzes-brickstorm-espionage-backdoor https://blog.nviso.eu/wp-content/uploads/2025/04/NVISO-BRICKSTORM-Report.pdf OpenAI GPT 4.1 Controversy OpenAI released its latest model, GPT 4.1, without a safety report and guardrails to prevent malware creation. https://opentools.ai/news/openai-stirs-controversy-with-gpt-41-release-lacking-safety-report keywords: openai; safety; malware; brickstorm; erlang; ssh; redtail; kasm; docker; container; aws; remnux
    Más Menos
    6 m
  • SANS Stormcast Thursday April 17th: Apple Updates; Oracle Updates; Google Chrome Updates; CVE News; (#)

    SANS Stormcast Thursday April 17th: Apple Updates; Oracle Updates; Google Chrome Updates; CVE News; (#)
    Apr 16 2025
    SANS Stormcast Thursday April 17th: Apple Updates; Oracle Updates; Google Chrome Updates; CVE News; Apple Updates Apple released updates for iOS, iPadOS, macOS, and VisionOS. The updates fix two vulnerabilities which had already been exploited against iOS. https://isc.sans.edu/diary/Apple%20Patches%20Exploited%20Vulnerability/31866 Oracle Updates Oracle released it quarterly critical patch update. The update addresses 378 security vulnerabilities. Many of the critical updates are already known vulnerabilities in open-source software like Apache and Nginx ingress. https://www.oracle.com/security-alerts/cpuapr2025.html Oracle Breach Guidance CISA released guidance for users affected by the recent Oracle cloud breach. The guidance focuses on the likely loss of passwords. https://www.cisa.gov/news-events/alerts/2025/04/16/cisa-releases-guidance-credential-risks-associated-potential-legacy-oracle-cloud-compromise Google Chrome Update A Google Chrome update released today fixes two security vulnerabilities. One of the vulnerabilities is rated as critical. https://chromereleases.googleblog.com/2025/04/stable-channel-update-for-desktop_15.html CVE Updates CISA extended MITRE’s funding to operate the CVE numbering scheme. However, a number of other organizations announced that they may start alternative vulnerability registers. https://euvd.enisa.europa.eu/ https://gcve.eu/ https://www.thecvefoundation.org/ keywords: cve; cisa; mitre; chrome; google; oracle; apple
    Más Menos
    6 m
adbl_web_global_use_to_activate_webcro768_stickypopup