CVSS: 7.5EPSS: 0%CPEs: 10EXPL: 0CVE-2022-3094 – An UPDATE message flood may cause named to exhaust all available memory
https://notcve.org/view.php?id=CVE-2022-3094
Sending a flood of dynamic DNS updates may cause `named` to allocate large amounts of memory. This, in turn, may cause `named` to exit due to a lack of free memory. We are not aware of any cases where this has been exploited. Memory is allocated prior to the checking of access permissions (ACLs) and is retained during the processing of a dynamic update from a client whose access credentials are accepted. Memory allocated to clients that are not permitted to send updates is released immediately upon rejection. The scope of this vulnerability is limited therefore to trusted clients who are permitted to make dynamic zone changes. If a dynamic update is REFUSED, memory will be released again very quickly. • https://kb.isc.org/docs/cve-2022-3094 https://access.redhat.com/security/cve/CVE-2022-3094 https://bugzilla.redhat.com/show_bug.cgi?id=2164032 • CWE-20: Improper Input Validation CWE-416: Use After Free •
CVSS: 7.5EPSS: 0%CPEs: 9EXPL: 0CVE-2022-3080 – BIND 9 resolvers configured to answer from stale cache with zero stale-answer-client-timeout may terminate unexpectedly
https://notcve.org/view.php?id=CVE-2022-3080
By sending specific queries to the resolver, an attacker can cause named to crash. Mediante el envío de consultas específicas al resolver, un atacante puede causar la caída de named A flaw was found in the Bind package, where the resolver can crash when stale cache and stale answers are enabled, option stale-answer-client-timeout is set to 0 and there is a stale CNAME in the cache for an incoming query. By sending specific queries to the resolver, an attacker can cause named to crash. • http://www.openwall.com/lists/oss-security/2022/09/21/3 https://kb.isc.org/docs/cve-2022-3080 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4GQWBPF7Y52J2FA24U6UMHQAOXZEF7 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZJQNUASODNVAWZV6STKG5SD6XIJ446S https://security.gentoo.org/glsa/202210-25 https://securi • CWE-20: Improper Input Validation CWE-613: Insufficient Session Expiration •
CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2022-2906 – Memory leaks in code handling Diffie-Hellman key exchange via TKEY RRs (OpenSSL 3.0.0+ only)
https://notcve.org/view.php?id=CVE-2022-2906
An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service. Un atacante puede aprovechar este fallo para erosionar gradualmente la memoria disponible hasta el punto de que named sea bloqueado por falta de recursos. Al reiniciar, el atacante tendría que empezar de nuevo, pero sin embargo se presenta la posibilidad de denegar el servicio • http://www.openwall.com/lists/oss-security/2022/09/21/3 https://kb.isc.org/docs/cve-2022-2906 https://security.gentoo.org/glsa/202210-25 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 8.2EPSS: 0%CPEs: 2EXPL: 0CVE-2022-2881 – Buffer overread in statistics channel code
https://notcve.org/view.php?id=CVE-2022-2881
The underlying bug might cause read past end of the buffer and either read memory it should not read, or crash the process. Un fallo subyacente podría causar que sea leído más allá del final del buffer y que sea leída memoria que no debería leer, o que bloqueará el proceso • http://www.openwall.com/lists/oss-security/2022/09/21/3 https://kb.isc.org/docs/cve-2022-2881 https://security.gentoo.org/glsa/202210-25 • CWE-125: Out-of-bounds Read •
CVSS: 5.3EPSS: 0%CPEs: 35EXPL: 0CVE-2022-2795 – Processing large delegations may severely degrade resolver performance
https://notcve.org/view.php?id=CVE-2022-2795
By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. Al inundar el resolvedor de destino con consultas que explotan este fallo, un atacante puede perjudicar significativamente el rendimiento del resolvedor, negando efectivamente a los clientes legítimos el acceso al servicio de resolución DNS A flaw was found in bind. When flooding the target resolver with special queries, an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service. • http://www.openwall.com/lists/oss-security/2022/09/21/3 https://kb.isc.org/docs/cve-2022-2795 https://lists.debian.org/debian-lts-announce/2022/10/msg00007.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CV4GQWBPF7Y52J2FA24U6UMHQAOXZEF7 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZJQNUASODNVAWZV6STKG5S • CWE-400: Uncontrolled Resource Consumption •