-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: dhcp security update Advisory ID: RHSA-2021:2359-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2359 Issue date: 2021-06-09 CVE Names: CVE-2021-25217 ==================================================================== 1. Summary: An update for dhcp is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64 3. Description: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The dhcp packages provide a relay agent and ISC DHCP service required to enable and administer DHCP on a network. Security Fix(es): * dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient (CVE-2021-25217) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1963258 - CVE-2021-25217 dhcp: stack-based buffer overflow when parsing statements with colon-separated hex digits in config or lease files in dhcpd and dhclient 6. Package List: Red Hat Enterprise Linux BaseOS (v. 8): Source: dhcp-4.3.6-44.el8_4.1.src.rpm aarch64: dhcp-client-4.3.6-44.el8_4.1.aarch64.rpm dhcp-client-debuginfo-4.3.6-44.el8_4.1.aarch64.rpm dhcp-debuginfo-4.3.6-44.el8_4.1.aarch64.rpm dhcp-debugsource-4.3.6-44.el8_4.1.aarch64.rpm dhcp-libs-4.3.6-44.el8_4.1.aarch64.rpm dhcp-libs-debuginfo-4.3.6-44.el8_4.1.aarch64.rpm dhcp-relay-4.3.6-44.el8_4.1.aarch64.rpm dhcp-relay-debuginfo-4.3.6-44.el8_4.1.aarch64.rpm dhcp-server-4.3.6-44.el8_4.1.aarch64.rpm dhcp-server-debuginfo-4.3.6-44.el8_4.1.aarch64.rpm noarch: dhcp-common-4.3.6-44.el8_4.1.noarch.rpm ppc64le: dhcp-client-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-client-debuginfo-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-debuginfo-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-debugsource-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-libs-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-libs-debuginfo-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-relay-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-relay-debuginfo-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-server-4.3.6-44.el8_4.1.ppc64le.rpm dhcp-server-debuginfo-4.3.6-44.el8_4.1.ppc64le.rpm s390x: dhcp-client-4.3.6-44.el8_4.1.s390x.rpm dhcp-client-debuginfo-4.3.6-44.el8_4.1.s390x.rpm dhcp-debuginfo-4.3.6-44.el8_4.1.s390x.rpm dhcp-debugsource-4.3.6-44.el8_4.1.s390x.rpm dhcp-libs-4.3.6-44.el8_4.1.s390x.rpm dhcp-libs-debuginfo-4.3.6-44.el8_4.1.s390x.rpm dhcp-relay-4.3.6-44.el8_4.1.s390x.rpm dhcp-relay-debuginfo-4.3.6-44.el8_4.1.s390x.rpm dhcp-server-4.3.6-44.el8_4.1.s390x.rpm dhcp-server-debuginfo-4.3.6-44.el8_4.1.s390x.rpm x86_64: dhcp-client-4.3.6-44.el8_4.1.x86_64.rpm dhcp-client-debuginfo-4.3.6-44.el8_4.1.i686.rpm dhcp-client-debuginfo-4.3.6-44.el8_4.1.x86_64.rpm dhcp-debuginfo-4.3.6-44.el8_4.1.i686.rpm dhcp-debuginfo-4.3.6-44.el8_4.1.x86_64.rpm dhcp-debugsource-4.3.6-44.el8_4.1.i686.rpm dhcp-debugsource-4.3.6-44.el8_4.1.x86_64.rpm dhcp-libs-4.3.6-44.el8_4.1.i686.rpm dhcp-libs-4.3.6-44.el8_4.1.x86_64.rpm dhcp-libs-debuginfo-4.3.6-44.el8_4.1.i686.rpm dhcp-libs-debuginfo-4.3.6-44.el8_4.1.x86_64.rpm dhcp-relay-4.3.6-44.el8_4.1.x86_64.rpm dhcp-relay-debuginfo-4.3.6-44.el8_4.1.i686.rpm dhcp-relay-debuginfo-4.3.6-44.el8_4.1.x86_64.rpm dhcp-server-4.3.6-44.el8_4.1.x86_64.rpm dhcp-server-debuginfo-4.3.6-44.el8_4.1.i686.rpm dhcp-server-debuginfo-4.3.6-44.el8_4.1.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2021-25217 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYMCeFtzjgjWX9erEAQgUSg//XKU94R6cwMJv4VxYfyLT+9hy/EG7saql EFGm2wipPg/idXliVJ0ZgytuapMfXNxTraj0gZOJ72dq+thAVYxrNWsWNDwbmPvj 7mGxetUyPRSQm/hCzl9pIanHsT/h8kXnlWKX2n2EDlWJd+dvZOABpMVUjHna84h2 nMJvJ4mI799W8/prgJU3glro9V921cKPhSoh37Wp4lh/SpBlkrGIbtdaiMreKEEK GS5hxn3Sjwib99e9nXccV6M/nSdTKFJv53ictCEm5Jy4DG92UnZi5XVK558gmSHt yYfxdWpsDPvPy9olFrpShV9pWBXJ5S7KfyWVhKgJqU3IoN8Jf6BfxLPD+YP0rzKS s0O6VWe22Vi7YO97PiymWxVvmgKs3JYWy32ZWpvgpwnMT/VJRbXzuHcsQxFiVClB hProM6ydzjuQALVbANEwBQTkV7cQovswhI/NWVKiC5zhwad3YmXr042cXexO/vdw XKUnLfgQHeLqdq7rdpak6Jw9MgbqC+B3cjYxJYaxi+7fL5U5VpLUwAlQ4GkKIUAr mxLtX7zM066qdWaV8SNLwEuWUzHhilnGHRnuH5Gao5aoQX62c4Dfn7DYt4uK+J6d Nhi+1DImG2ICi8ePhbkOSgDqHJntx+Nc1AShf3JFvBbXeyNO1QpiUKQbj3IQc81p 7TxxZq6orTg=woof -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce