-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-4133-1 security@xxxxxxxxxx https://www.debian.org/security/ Salvatore Bonaccorso March 07, 2018 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : isc-dhcp CVE ID : CVE-2017-3144 CVE-2018-5732 CVE-2018-5733 Debian Bug : 887413 891785 891786 Several vulnerabilities have been discovered in the ISC DHCP client, relay and server. The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2017-3144 It was discovered that the DHCP server does not properly clean up closed OMAPI connections, which can lead to exhaustion of the pool of socket descriptors available to the DHCP server, resulting in denial of service. CVE-2018-5732 Felix Wilhelm of the Google Security Team discovered that the DHCP client is prone to an out-of-bound memory access vulnerability when processing specially constructed DHCP options responses, resulting in potential execution of arbitrary code by a malicious DHCP server. CVE-2018-5733 Felix Wilhelm of the Google Security Team discovered that the DHCP server does not properly handle reference counting when processing client requests. A malicious client can take advantage of this flaw to cause a denial of service (dhcpd crash) by sending large amounts of traffic. For the oldstable distribution (jessie), these problems have been fixed in version 4.3.1-6+deb8u3. For the stable distribution (stretch), these problems have been fixed in version 4.3.5-3+deb9u1. We recommend that you upgrade your isc-dhcp packages. For the detailed security status of isc-dhcp please refer to its security tracker page at: https://security-tracker.debian.org/tracker/isc-dhcp 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: debian-security-announce@xxxxxxxxxxxxxxxx -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAlqgZQdfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0S4qQ//VNSM01tKHKfBTlVrJdIqghjEyanHVqExQCBATd4SzRKykKsEnBi2L1q3 o4aAkINuGcjSCbK21GywMygRJDGcALZG2ppSIycdnZvmtszIKhsLYKSBlF5sR0J9 /EWzp9EkcvJfdhpU5lytl33JjyqmNA2YM/dixoPTqhZi/xHBxlTPuj/H9lB2phyV I4c6x4zefXRTLNSRJkeedvgV63nnM71zmbkICdsXQ35xtDa/RWwJIEhOBgsUINbY OG/YUMZlhxo74eaCb91xDFB+zIwhK3JAUk6zKVVaElTwxhb7sdWaPS3x6lz7rCe+ uzjiHHmFDYvtIGGCO8umzZR9KYZd8DjekzbRvs8ROL4CaWCoaplx9ESm6E/rTdHh VU+bDrDQsJt0CLHziekTu6KjWZQkEUUI/48SOBY4olKshLbQFV76kSr1HZZ6SmBb EkKQHNF9kgS6eXwekxV0RG6tSudPZaDtBldPqEQUPoeRMrDawDO4SjGbMz7bzgEU 3nJOn9AdYzGfLkpHukTP9JSJiHh0hQUsB0MlA+Khs/OzbG7Drr0zjWi8naz1d0ZI v3svwC3DLryNOk5ePYDkrRXvTyzKXCiF1X29mxpfQDB3lLkFaie/MDM8alKQr1Lr EwCwSRx6UjpXFhB8jhktM55aKz8zyZyW2JtLwKeGB74ZbM8LH+Q= =sS82 -----END PGP SIGNATURE-----
