- ------------------------------------------------------------------------- Debian Security Advisory DSA-4689-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/security/ Salvatore Bonaccorso May 19, 2020 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : bind9 CVE ID : CVE-2019-6477 CVE-2020-8616 CVE-2020-8617 Debian Bug : 945171 Several vulnerabilities were discovered in BIND, a DNS server implementation. CVE-2019-6477 It was discovered that TCP-pipelined queries can bypass tcp-client limits resulting in denial of service. CVE-2020-8616 It was discovered that BIND does not sufficiently limit the number of fetches performed when processing referrals. An attacker can take advantage of this flaw to cause a denial of service (performance degradation) or use the recursing server in a reflection attack with a high amplification factor. CVE-2020-8617 It was discovered that a logic error in the code which checks TSIG validity can be used to trigger an assertion failure, resulting in denial of service. For the oldstable distribution (stretch), these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u6. For the stable distribution (buster), these problems have been fixed in version 1:9.11.5.P4+dfsg-5.1+deb10u1. We recommend that you upgrade your bind9 packages. For the detailed security status of bind9 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/bind9 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
Debian: DSA-4689-1: bind9 security update
Several vulnerabilities were discovered in BIND, a DNS server implementation. CVE-2019-6477
