Medium
Canonical Ubuntu
Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled parsing large DNS messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. (CVE-2023-4408) Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Bind icorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. (CVE-2023-50387) It was discovered that Bind incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. (CVE-2023-50868) It was discovered that Bind incorrectly handled reverse zone queries when nxdomain-redirect is enabled. A remote attacker could possibly use this issue to cause Bind to crash, leading to a denial of service. (CVE-2023-5517) It was discovered that Bind incorrectly handled recursive resolution when both DNS64 and serve-stable were enabled. A remote attacker could possibly use this issue to cause Bind to crash, leading to a denial of service. (CVE-2023-5679) Update Instructions: Run sudo pro fix USN-6633-1
to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: dnsutils – 1:9.18.18-0ubuntu0.22.04.2 bind9-libs – 1:9.18.18-0ubuntu0.22.04.2 bind9utils – 1:9.18.18-0ubuntu0.22.04.2 bind9-dev – 1:9.18.18-0ubuntu0.22.04.2 bind9-doc – 1:9.18.18-0ubuntu0.22.04.2 bind9-utils – 1:9.18.18-0ubuntu0.22.04.2 bind9 – 1:9.18.18-0ubuntu0.22.04.2 bind9-dnsutils – 1:9.18.18-0ubuntu0.22.04.2 bind9-host – 1:9.18.18-0ubuntu0.22.04.2 No subscription required
CVEs contained in this USN include: CVE-2023-4408, CVE-2023-50387, CVE-2023-50868, CVE-2023-5517, CVE-2023-5679.
Severity is medium unless otherwise noted.
Users of affected products are strongly encouraged to follow the mitigations below.
The Cloud Foundry project recommends upgrading the following releases:
2024-02-29: Initial vulnerability report published.
CPE | Name | Operator | Version |
---|---|---|---|
cflinuxfs4 | lt | 1.72.0 | |
jammy stemcells | lt | 1.379 | |
cf deployment | lt | 1.379 |