주의: 이 번역은 원문보다 오래되었습니다.

데비안 보안 권고

DSA-4465-1 linux -- 보안 업데이트

보고일:
2019년 06월 17일
영향 받는 패키지:
linux
위험성:
보안 데이터베이스 참조:
데비안 버그 추적 시스템: 버그 928989.
Mitre의 CVE 사전: CVE-2019-3846, CVE-2019-5489, CVE-2019-9500, CVE-2019-9503, CVE-2019-10126, CVE-2019-11477, CVE-2019-11478, CVE-2019-11479, CVE-2019-11486, CVE-2019-11599, CVE-2019-11815, CVE-2019-11833, CVE-2019-11884.
추가 정보:

여러 취약점을 리눅스 커널에서 발견, 권한 상승, 서비스 거부 또는 정보 유출을 일으킬 수 있음.

  • CVE-2019-3846, CVE-2019-10126

    huangwen reported multiple buffer overflows in the Marvell wifi (mwifiex) driver, which a local user could use to cause denial of service or the execution of arbitrary code.

  • CVE-2019-5489

    Daniel Gruss, Erik Kraft, Trishita Tiwari, Michael Schwarz, Ari Trachtenberg, Jason Hennessey, Alex Ionescu, and Anders Fogh discovered that local users could use the mincore() system call to obtain sensitive information from other processes that access the same memory-mapped file.

  • CVE-2019-9500, CVE-2019-9503

    Hugues Anguelkov discovered a buffer overflow and missing access validation in the Broadcom FullMAC wifi driver (brcmfmac), which a attacker on the same wifi network could use to cause denial of service or the execution of arbitrary code.

  • CVE-2019-11477

    Jonathan Looney reported that a specially crafted sequence of TCP selective acknowledgements (SACKs) allows a remotely triggerable kernel panic.

  • CVE-2019-11478

    Jonathan Looney reported that a specially crafted sequence of TCP selective acknowledgements (SACKs) will fragment the TCP retransmission queue, allowing an attacker to cause excessive resource usage.

  • CVE-2019-11479

    Jonathan Looney reported that an attacker could force the Linux kernel to segment its responses into multiple TCP segments, each of which contains only 8 bytes of data, drastically increasing the bandwidth required to deliver the same amount of data.

    This update introduces a new sysctl value to control the minimal MSS (net.ipv4.tcp_min_snd_mss), which by default uses the formerly hard coded value of 48. We recommend raising this to 536 unless you know that your network requires a lower value.

  • CVE-2019-11486

    Jann Horn of Google reported numerous race conditions in the Siemens R3964 line discipline. A local user could use these to cause unspecified security impact. This module has therefore been disabled.

  • CVE-2019-11599

    Jann Horn of Google reported a race condition in the core dump implementation which could lead to a use-after-free. A local user could use this to read sensitive information, to cause a denial of service (memory corruption), or for privilege escalation.

  • CVE-2019-11815

    It was discovered that a use-after-free in the Reliable Datagram Sockets protocol could result in denial of service and potentially privilege escalation. This protocol module (rds) is not auto loaded on Debian systems, so this issue only affects systems where it is explicitly loaded.

  • CVE-2019-11833

    It was discovered that the ext4 filesystem implementation writes uninitialised data from kernel memory to new extent blocks. A local user able to write to an ext4 filesystem and then read the filesystem image, for example using a removable drive, might be able to use this to obtain sensitive information.

  • CVE-2019-11884

    It was discovered that the Bluetooth HIDP implementation did not ensure that new connection names were null-terminated. A local user with CAP_NET_ADMIN capability might be able to use this to obtain sensitive information from the kernel stack.

안정 배포(stretch)에서, 이 문제를 버전 4.9.168-1+deb9u3에서 고침.

linux 패키지 업그레이드 권함.

linux 의 자세한 보안 상태는 보안 추적 페이지 참조: https://security-tracker.debian.org/tracker/linux