CVE-2020-17439

An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that parses incoming DNS packets does not validate that the incoming DNS replies match outgoing DNS queries in newdata in resolv.c. Also, arbitrary DNS replies are parsed if there was any outgoing DNS query wi...

Code injection

An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not set sufficiently random transaction IDs they are always set to 1 in fnetdnspoll in fnetdns.c. This significantly simplifies DNS cache poisoning attacks...

Default configuration

An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that parses incoming DNS packets does not validate that the incoming DNS replies match outgoing DNS queries in newdata in resolv.c. Also, arbitrary DNS replies are parsed if there was any outgoing DNS query wi...

CVE-2020-17470

An issue was discovered in FNET through 4.6.4. The code that initializes the DNS client interface structure does not set sufficiently random transaction IDs they are always set to 1 in fnetdnspoll in fnetdns.c. This significantly simplifies DNS cache poisoning attacks...

CVE-2020-17470

CVE-2020-17470 affects FNET (up to 4.6.4) where DNS client interface initialization leaves DNS transaction IDs non-random (always 1 in _fnet_dns_poll in fnet_dns.c), making DNS cache poisoning more feasible. The CVE is documented with a MEDIUM base score (~4.0–5.3 range in the CVSS vectors) and i...

CVE-2020-17439

An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. The code that parses incoming DNS packets does not validate that the incoming DNS replies match outgoing DNS queries in newdata in resolv.c. Also, arbitrary DNS replies are parsed if there was any outgoing DNS query wi...

PT-2020-15012 · Fnet · Fnet

Name of the Vulnerable Software and Affected Versions: FNET versions through 4.6.4 Description: An issue was discovered in the code that initializes the DNS client interface structure, where it does not set sufficiently random transaction IDs, always setting them to 1 in fnet dns poll in fnet...

Microsoft Releases Windows Update (Dec 2020) to Fix 58 Security Flaws

Microsoft on Tuesday released fixes for 58 newly discovered security flaws spanning as many as 11 products and services as part of its final Patch Tuesday of 2020, effectively bringing their CVE total to 1,250 for the year. Of these 58 patches, nine are rated as Critical, 46 are rated as Importan...

Apache Traffic Server Sensitive Information Disclosure Vulnerability

Apache Traffic Server ATS is the United States Apache Apache Foundation's set of scalable HTTP proxy and caching server. A security vulnerability exists in Apache Traffic Server, which can be exploited by an attacker to bypass access restrictions to data via the server's negative cache poisoning ...

Security Advisory 2020-12-09-1 - Linux kernel - ICMP rate limiting can be used to facilitate DNS poisoning attack (CVE-2020-25705)

DESCRIPTION A flaw has been found in the ICMP rate limiting algorithm of the Linux kernel. This flaw allows an off-path attacker to quickly determine open ephemeral ports that are used by applications making outbound connections. This can be exploited by an off-path attacker to more easily perfor...

2020 Under the Hoodie Report Reveals Pen Testers’ Most-Loved Vulnerabilities

Penetration testing “pentesting” is the practice of simulating a criminal breach of a sensitive area in order to uncover and fix defensive failures. Rapid7’s recently released report, Under the Hoodie, draws from the experiences of our Rapid7 pen testing services teamers to highlight key...

Microsoft Guidance for Addressing Spoofing Vulnerability in DNS Resolver

Microsoft is aware of a vulnerability involving DNS cache poisoning caused by IP fragmentation that affects Windows DNS Resolver. An attacker who successfully exploited this vulnerability could spoof the DNS packet which can be cached by the DNS Forwarder or the DNS Resolver. For more information...

Contiki Input Validation Error Vulnerability

Contiki is an open source cross-platform operating system for IoT Internet of Things devices. Contiki 3.0 suffers from an input validation error vulnerability that stems from the DNS transaction ID not being randomized enough. If the DNS cache is very small four entries, this can facilitate a DNS...

Contiki-NG Security Feature Issue Vulnerability

Contiki-NG is an open source cross-platform operating system for next-generation IoT Internet of Things devices. A security signature issue vulnerability exists in Contiki-NG that stems from functions used to initialize the DNS client interface structure not setting enough random transaction IDs...

Debian DSA-4805-1 : trafficserver - security update

Two vulnerabilities were discovered in Apache Traffic Server, a reverse and forward proxy server : - CVE-2020-17508 The ESI plugin was vulnerable to memory disclosure. - CVE-2020-17509 The negative cache option was vulnerable to cache poisoning. C Tenable Network Security, Inc. The descriptive te...

Vulnerabilities fixed in Microsoft Windows

There are several vulnerabilities in Microsoft Windows. The vulnerabilities allow a malicious person to: - execute arbitrary code with user privileges; - grant themselves elevated privileges; - circumvent security measures; - gain access to sensitive data; - construct a DNS cache poisoning attack...

[SECURITY] [DSA 4805-1] trafficserver security update

------------------------------------------------------------------------- Debian Security Advisory DSA-4805-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff December 07, 2020 https://www.debian.org/security/faq -...

Cache Poisoning

apache/trafficserver is vulnerable to cache poisoning. Insufficient validation of user inputs allow a remote attacker to send specially crafted data to the proxy server and poison negative server's cache...

Security Bulletin: Vulnerability in Urllib3 affects IBM Spectrum Protect Container and Microsoft File Systems Agents (CVE-2020-26137)

Summary Urllib3 is vulnerable to CRLF injection which could allow a remote attacker to perform cross-site scripting, cache poisoning, or session hijacking attacks. This vulnerability may affect the IBM Spectrum Protect Plus Container agent for Kubernetes and the IBM Spectrum Protect Plus Microsof...

Vulnerability fixed in DNS implementations

Researchers have discovered a vulnerability in a number of DNS implementations. The researchers have named the vulnerability SAD DNS, an acronymmm for Side-channel AttackeD DNS. This vulnerability has since been given CVE attribute CVE-2020-25705. The vulnerability allows a malicious party to rou...