ALT-PU-2017-2138-1

Package update dhcp in branch sisyphus

Version4.3.6-alt1

Published2017-08-31

Max severityCRITICAL

Severity:

Closed issues (4)

CRITICAL9.1

Уязвимость сервера ISC DHCP, связанная с переполнением буфера памяти, позволяющая нарушителю вызвать отказ в обслуживании или получить несанкционированный доступ к конфиденциальным данным

Published: 2018-03-06Modified: 2024-11-28

CVSS 3.xCRITICAL 9.1

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CVSS 2.0CRITICAL 9.4

CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:N/A:C

References

MEDIUM6.5

ISC DHCP 4.x before 4.1-ESV-R12-P1, 4.2.x, and 4.3.x before 4.3.3-P1 allows remote attackers to cause a denial of service (application crash) via an invalid length field in a UDP IPv4 packet.

Published: 2016-01-14Modified: 2025-04-12

CVSS 2.0MEDIUM 5.7

CVSS:2.0/AV:A/AC:M/Au:N/C:N/I:N/A:C

CVSS 3.xMEDIUM 6.5

CVSS:3.x/CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

MEDIUM5.9

ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.

Published: 2016-03-09Modified: 2025-04-12

CVSS 2.0HIGH 7.1

CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:C

CVSS 3.xMEDIUM 5.9

CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References

HIGH7.5

Failure to properly bounds-check a buffer used for processing DHCP options allows a malicious server (or an entity masquerading as a server) to cause a buffer overflow (and resulting crash) in dhclient by sending a response containing a specially constructed options section. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0

Published: 2019-10-09Modified: 2024-11-21

CVSS 2.0MEDIUM 5.0

CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS 3.xHIGH 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References