Cisco Patches IOS in Response to Boffins' IKE-Busting Breakthrough
Switchzilla issues update for authentication bypass flaw
Cisco has pushed out an update for its internetwork operating system (IOS) and IOS XE firmware in advance of a Usenix presentation on circumventing cryptographic key protocol.
The networking behemoth is advising all customers running hardware that uses IOS and IOS XE to get the updates that address CVE-2018-0131, a security bypass vulnerability stemming from a weakness in the Internet Key Exchange (IKEv1) protocol.
Researchers Dennis Felsch, Martin Grothe, Jörg Schwenk, Adam Czubak, and Marcin Szymanek from Ruhr-University Bochum and University of Opole found [PDF] that an attacker could contact a device with ciphertext requests that, under the right circumstances, could cause the target device to disclose the encrypted nonces (single-use numbers for encryption keys) and potentially lead to the keys being broken.
The group, who plan to share their findings later this week at the conference, wrote that "reusing a key pair across different versions and modes of IKE can lead to cross-protocol authentication bypasses, enabling the impersonation of a victim host or network by attackers."
The attack would potentially be carried out either by eavesdropping on IP sessions or by performing a man-in-the-middle compromise and injecting code into packets.
The researchers say that, by deliberately sending bad cipher requests to the vulnerable machines, they could receive enough data to create a type of Bleichenbacher's Oracle [PDF] attack on the keys. This would, given enough time, would potentially allow the attacker to decrypt shared keys and get around encryption protections.
The researchers noted that they have already disclosed their findings to Cisco and other vendors impacted by the issue, and all are believed to have issued patches for vulnerable products prior to the publication of the paper.
Cisco says in its advisory that, short of moving off of IKEv1, there are no workarounds for the vulnerability. Switchzilla is advising anyone using an IOS or IOS XE device that is configured with the 'authentication rsa-encr' option turned on to update their firmware and make sure they have the patched IOS version.
The latest available version will vary based on device and model, but in general IOS versions 15.5(3)M7.2 and later will be protected.
- Cyber Incident Response Consultant, Italy
- Up to €60,000
Cyber Incident Response Consultant, Italy Up to €60,000 Cyber Incident Response Consultant is needed to join a global consultancy whose cyber business unit are continuing to their investment in the growth of their team. The Cyber Incident Response Consultant role is client facing that will join an award-winning team that deliver varied, interesting and often challenging work to a wide range of prestigious clients. The Cyber Incident Response Consultant MUST have current experience taking a client through the complete IR / triage process and have a blend of both technical and commercial (identifying and developing new business opportunities within a client) Proactive Incident response, forensics and eDiscovery experience is a MUST. The Cyber Incident Response Consultant must be happy to travel. Key attributes should also include; stakeholder engagement, mentoring of team members, a collaborative working style. Technical experience must include; demonstrable experience within an cyber incident response, Forensic, cyber etc. Additional certifications could / should include GIAC certified (Intrusion analyst, incident handler, forensic handler) Any of the following are very desirable also CREST Certified Network Intrusion Analyst (CCNIA) CREST Certified Host Intrusion Analyst (CCHIA) CREST Certified Malware Reverse Engineer (CCMRE) CREST Practitioner Intrusion Analyst (CPIA) Career development and the opportunity to influence, apply today for more information.
- Data Consultant
- Up to £90,000 Base
Data Consultant Location: London Salary: Up to £90,000 basic DD7692 A leading Google Cloud Platform (GCP) Provider who is looking for a Data Consultant, based in London. Experience with GCP or other similar platforms (AWS, AZURE etc), experience with GCP technologies as well as experience with Machine Learning, Data Mining and Data Analytics. The Data Consultant will be responsible for design solutions for customers and providing technical knowledge in customer meetings. Ideally, the Data Consultant will have experience transforming the way companies work by building company-centric solutions on the Google Cloud Platform or similar cloud platforms. Our client is a Premier Google Cloud Partner, offering an exciting opportunity to work with innovative technology whilst giving you the chance to grow and develop your career. You will have the opportunity to benefit from a number of training courses at several Google locations.
- Senior Delivery Consultant Emerging Technologies
Senior Delivery Consultant Emerging Technologies The Senior Delivery Consultant will work on pure retained executive search mandates in the emerging technology sector. The Senior Delivery Consultant will work closely with the practice lead to complete research and deliver the assignment to completion. This is a senior role with both client and candidate contact, although you will not have a fee generation target. A generous commission structure will exist linked to the successful delivery of assignments. Come and work for a business where the client is retained and you can focus 100% of your time and efforts headhunting the best talent out there in the market! Ref: AMSDC Salary: Dependant on Experience Location: Beckenham
- SOC Manager / Threat Hunting Service Lead, Cyber
- £85,000 +
REFCH7713 SOC Manager / Threat Hunting Service Lead, Cyber £85,000 + Bracknell SOC Manager / Threat Hunting service Lead needed- must be commutable to the Reading / Bracknell area. We are looking for a SOC Manager / Threat Hunting Service Lead to aid in building out a new SOC / Threat hunting (IR) service offering. An in-depth technical background is essential, experience across SOC SIEM/ Threat Hunting (IR) tools, processes, techniques, operational is a MUST. The role will include, but not limited to; Establishing the technical process, building operational capability, managing and hiring team, creation of policy/playbooks, fine turning of the go-to-market collateral etc. Apply today for more information or contact me directly on Chris.Holt@dclsearch.com or 07884666351 Cyber Security Jobs, Information Security Jobs, SOC Manager Jobs, SOC Jobs